[{"date_created":"2026-03-16T07:17:52Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"publication":"Advanced Photonics","issue":"02","abstract":[{"lang":"eng","text":"The degrees of freedom (DoFs) of light determine the maximum number of independent signal\r\nchannels an optical system can support. However, the polarization DoF is intrinsically limited to two by\r\northogonality, which causes unavoidable crosstalk and often forces position multiplexing, where different\r\nchannels are assigned to distinct spatial locations to suppress crosstalk. This research introduces a multilayer\r\nsynchronous polarization projection method that fundamentally increases the DoF for polarization\r\nmultiplexing. The DoF equals twice the number of projection layers. We experimentally demonstrate six-\r\nchannel polarization multiplexing holography without position multiplexing. The six-channel multiplexing\r\nresults indicate that our approach exceeds the conventional polarization multiplexing method, yielding an\r\naverage 3.79 dB improvement in extinction ratio across the six channels. Compared with the theoretical\r\nlimit of traditional polarization multiplexing, our method reduces crosstalk by an average of 6.52 dB across\r\nall channels in a seven-channel design. The polarization projection method breaks the DoF limitation\r\nof polarization multiplexing, opening a path toward high-dimensional photonic information encoding for\r\ncommunication, encryption, and imaging."}],"main_file_link":[{"url":"https://www.researching.cn/Articles/OJafd1e3b9e643c6be","open_access":"1"}],"article_number":"26010","language":[{"iso":"eng"}],"doi":"10.1117/1.ap.8.2.026010","year":"2026","title":"Increasing the design degree of freedom for polarization through multilayer synchronous polarization projection","author":[{"first_name":"Xiao","last_name":"Jin","full_name":"Jin, Xiao"},{"id":"30525","first_name":"Thomas","orcid":"0000-0002-8662-1101","last_name":"Zentgraf","full_name":"Zentgraf, Thomas"}],"publication_identifier":{"issn":["2577-5421"]},"date_updated":"2026-03-16T07:20:07Z","publication_status":"published","intvolume":"         8","article_type":"original","oa":"1","citation":{"bibtex":"@article{Jin_Zentgraf_2026, title={Increasing the design degree of freedom for polarization through multilayer synchronous polarization projection}, volume={8}, DOI={<a href=\"https://doi.org/10.1117/1.ap.8.2.026010\">10.1117/1.ap.8.2.026010</a>}, number={0226010}, journal={Advanced Photonics}, publisher={SPIE-Intl Soc Optical Eng}, author={Jin, Xiao and Zentgraf, Thomas}, year={2026} }","ama":"Jin X, Zentgraf T. Increasing the design degree of freedom for polarization through multilayer synchronous polarization projection. <i>Advanced Photonics</i>. 2026;8(02). doi:<a href=\"https://doi.org/10.1117/1.ap.8.2.026010\">10.1117/1.ap.8.2.026010</a>","mla":"Jin, Xiao, and Thomas Zentgraf. “Increasing the Design Degree of Freedom for Polarization through Multilayer Synchronous Polarization Projection.” <i>Advanced Photonics</i>, vol. 8, no. 02, 26010, SPIE-Intl Soc Optical Eng, 2026, doi:<a href=\"https://doi.org/10.1117/1.ap.8.2.026010\">10.1117/1.ap.8.2.026010</a>.","chicago":"Jin, Xiao, and Thomas Zentgraf. “Increasing the Design Degree of Freedom for Polarization through Multilayer Synchronous Polarization Projection.” <i>Advanced Photonics</i> 8, no. 02 (2026). <a href=\"https://doi.org/10.1117/1.ap.8.2.026010\">https://doi.org/10.1117/1.ap.8.2.026010</a>.","short":"X. Jin, T. Zentgraf, Advanced Photonics 8 (2026).","ieee":"X. Jin and T. Zentgraf, “Increasing the design degree of freedom for polarization through multilayer synchronous polarization projection,” <i>Advanced Photonics</i>, vol. 8, no. 02, Art. no. 26010, 2026, doi: <a href=\"https://doi.org/10.1117/1.ap.8.2.026010\">10.1117/1.ap.8.2.026010</a>.","apa":"Jin, X., &#38; Zentgraf, T. (2026). Increasing the design degree of freedom for polarization through multilayer synchronous polarization projection. <i>Advanced Photonics</i>, <i>8</i>(02), Article 26010. <a href=\"https://doi.org/10.1117/1.ap.8.2.026010\">https://doi.org/10.1117/1.ap.8.2.026010</a>"},"quality_controlled":"1","publisher":"SPIE-Intl Soc Optical Eng","_id":"64978","user_id":"30525","volume":8,"status":"public"},{"status":"public","_id":"65037","publisher":"Wiley","volume":127,"user_id":"85414","citation":{"mla":"Simeu, Arnold Tchomgue, et al. “Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws.” <i>International Journal for Numerical Methods in Engineering</i>, vol. 127, no. 6, e70294, Wiley, 2026, doi:<a href=\"https://doi.org/10.1002/nme.70294\">10.1002/nme.70294</a>.","apa":"Simeu, A. T., Caylak, I., &#38; Ostwald, R. (2026). Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws. <i>International Journal for Numerical Methods in Engineering</i>, <i>127</i>(6), Article e70294. <a href=\"https://doi.org/10.1002/nme.70294\">https://doi.org/10.1002/nme.70294</a>","ieee":"A. T. Simeu, I. Caylak, and R. Ostwald, “Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws,” <i>International Journal for Numerical Methods in Engineering</i>, vol. 127, no. 6, Art. no. e70294, 2026, doi: <a href=\"https://doi.org/10.1002/nme.70294\">10.1002/nme.70294</a>.","chicago":"Simeu, Arnold Tchomgue, Ismail Caylak, and Richard Ostwald. “Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws.” <i>International Journal for Numerical Methods in Engineering</i> 127, no. 6 (2026). <a href=\"https://doi.org/10.1002/nme.70294\">https://doi.org/10.1002/nme.70294</a>.","short":"A.T. Simeu, I. Caylak, R. Ostwald, International Journal for Numerical Methods in Engineering 127 (2026).","ama":"Simeu AT, Caylak I, Ostwald R. Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws. <i>International Journal for Numerical Methods in Engineering</i>. 2026;127(6). doi:<a href=\"https://doi.org/10.1002/nme.70294\">10.1002/nme.70294</a>","bibtex":"@article{Simeu_Caylak_Ostwald_2026, title={Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws}, volume={127}, DOI={<a href=\"https://doi.org/10.1002/nme.70294\">10.1002/nme.70294</a>}, number={6e70294}, journal={International Journal for Numerical Methods in Engineering}, publisher={Wiley}, author={Simeu, Arnold Tchomgue and Caylak, Ismail and Ostwald, Richard}, year={2026} }"},"quality_controlled":"1","author":[{"full_name":"Simeu, Arnold Tchomgue","first_name":"Arnold Tchomgue","last_name":"Simeu"},{"full_name":"Caylak, Ismail","last_name":"Caylak","first_name":"Ismail","id":"75"},{"orcid":"0000-0003-2147-8444","last_name":"Ostwald","first_name":"Richard","full_name":"Ostwald, Richard","id":"106876"}],"publication_identifier":{"issn":["0029-5981","1097-0207"]},"title":"Mesh and Model Adaptivity for Multiscale Elastoplastic Models With Prandtl‐Reuss Type Material Laws","year":"2026","intvolume":"       127","date_updated":"2026-03-18T05:31:02Z","publication_status":"published","language":[{"iso":"eng"}],"article_number":"e70294","doi":"10.1002/nme.70294","publication":"International Journal for Numerical Methods in Engineering","issue":"6","abstract":[{"lang":"eng","text":"<jats:title>ABSTRACT</jats:title>\r\n                  <jats:p>Homogenization methods simulate heterogeneous materials like composites effectively, but high computational demands can offset their benefits. This work balances accuracy and efficiency by assessing model and discretization errors of the finite element method (FEM) through an adaptive numerical scheme. Two model hierarchies are introduced, combining mean‐field and full‐field methods, and nonuniform transformation field analysis (NTFA) with full‐field methods. Both hierarchies use a full‐field FEM solution of the representative volume element (RVE) as reference. The study highlights the benefits of using effective constitutive equations from mean‐field and full‐field methods as well as NTFA methods, with a goal‐oriented a posteriori error estimator based on duality techniques controlling mesh and model errors in a forwards‐in‐time manner.</jats:p>"}],"date_created":"2026-03-18T05:28:29Z","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"type":"journal_article"},{"oa":"1","place":"Singapore","project":[{"name":"TRR 318: Erklärbarkeit konstruieren","_id":"109"},{"_id":"370","name":"TRR 318; TP B06: Ethik und Normativität der erklärbaren KI"}],"citation":{"chicago":"Rohlfing, Katharina J., Suzana Alpsancar, and Carsten Schulte. “Responsibilities in SXAI.” In <i>Social Explainable AI</i>, 157–77. Singapore: Springer Nature Singapore, 2026. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_9\">https://doi.org/10.1007/978-981-96-5290-7_9</a>.","short":"K.J. Rohlfing, S. Alpsancar, C. Schulte, in: Social Explainable AI, Springer Nature Singapore, Singapore, 2026, pp. 157–177.","ieee":"K. J. Rohlfing, S. Alpsancar, and C. Schulte, “Responsibilities in sXAI,” in <i>Social Explainable AI</i>, Singapore: Springer Nature Singapore, 2026, pp. 157–177.","apa":"Rohlfing, K. J., Alpsancar, S., &#38; Schulte, C. (2026). Responsibilities in sXAI. In <i>Social Explainable AI</i> (pp. 157–177). Springer Nature Singapore. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_9\">https://doi.org/10.1007/978-981-96-5290-7_9</a>","bibtex":"@inbook{Rohlfing_Alpsancar_Schulte_2026, place={Singapore}, title={Responsibilities in sXAI}, DOI={<a href=\"https://doi.org/10.1007/978-981-96-5290-7_9\">10.1007/978-981-96-5290-7_9</a>}, booktitle={Social Explainable AI}, publisher={Springer Nature Singapore}, author={Rohlfing, Katharina J. and Alpsancar, Suzana and Schulte, Carsten}, year={2026}, pages={157–177} }","ama":"Rohlfing KJ, Alpsancar S, Schulte C. Responsibilities in sXAI. In: <i>Social Explainable AI</i>. Springer Nature Singapore; 2026:157-177. doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_9\">10.1007/978-981-96-5290-7_9</a>","mla":"Rohlfing, Katharina J., et al. “Responsibilities in SXAI.” <i>Social Explainable AI</i>, Springer Nature Singapore, 2026, pp. 157–77, doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_9\">10.1007/978-981-96-5290-7_9</a>."},"user_id":"93637","publisher":"Springer Nature Singapore","_id":"65061","page":"157-177","status":"public","department":[{"_id":"26"},{"_id":"756"}],"type":"book_chapter","date_created":"2026-03-19T10:59:18Z","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>\r\n                    One of the purposes for which XAI is often brought into play is to enable a user to act responsibly. However, responsibility is a complex normative and social phenomenon that we unfold in this chapter. We consider that the classical concepts of agency and responsibility do not fully capture what is needed for meaningful collaboration between human users and XAI. Advocating the perspective of sXAI, we argue that the growing adaptivity of AI systems will result in sXAI being considered as partners. Both partners adopt particular (dialogical) roles within a collaborative process and take responsibility for them. We expect that these roles lead to reactive attitudes toward the sXAI on the side of the human partners that make these roles relational. They resemble those reactive attitudes that we hold toward other human agents. For agents to exercise their responsibility, they need to possess agential capacities to fulfill their role with respect to the structure of a social interaction. Hence, sXAI can be expected to act responsibly. But because of XAI’s limited normative capacities, it might rather act as a marginal agent. We refer to marginal agents and show they can be scaffolded with regard to their agential capacities and their knowledge about the structure of a social interaction. The structure links the actions of the partners to each other in terms of a set of stimuli and responses to it in pursuit of a particular goal. Hence, it is important to differentiate between the different goals that a structure can impose for exercising responsibility. Therefore, we follow (Responsibility from the margins. Oxford University Press; 2015.\r\n                    <jats:ext-link xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"https://doi.org/10.1093/acprof:oso/9780198715672.24001.0001\" ext-link-type=\"uri\">https://doi.org/10.1093/acprof:oso/9780198715672.24001.0001</jats:ext-link>\r\n                    ) and offer three structures that can help to organize responsibility for\r\n                    <jats:italic>decisions made</jats:italic>\r\n                    with the assistance of AI systems. These structures are attributability, answerability, and accountability. Our insights will inform the development and design process of XAI to meet the guiding principles of responsible research and innovation as well as trustworthy AI.\r\n                  </jats:p>"}],"publication":"Social Explainable AI","doi":"10.1007/978-981-96-5290-7_9","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1007/978-981-96-5290-7_9","open_access":"1"}],"publication_status":"published","date_updated":"2026-03-19T11:53:01Z","publication_identifier":{"isbn":["9789819652891","9789819652907"]},"author":[{"full_name":"Rohlfing, Katharina J.","first_name":"Katharina J.","last_name":"Rohlfing","orcid":"0000-0002-5676-8233","id":"50352"},{"full_name":"Alpsancar, Suzana","first_name":"Suzana","last_name":"Alpsancar","id":"93637"},{"first_name":"Carsten","last_name":"Schulte","full_name":"Schulte, Carsten","id":"60311"}],"year":"2026","title":"Responsibilities in sXAI"},{"page":"557-581","publisher":"Springer Nature Singapore","_id":"65063","user_id":"93637","status":"public","place":"Singapore","oa":"1","citation":{"apa":"Alpsancar, S., &#38; Stamboliev, E. (2026). Tasking AI Fairly. How to Empower AI Practitioners With sXAI? In <i>Social Explainable AI</i> (pp. 557–581). Springer Nature Singapore. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_29\">https://doi.org/10.1007/978-981-96-5290-7_29</a>","mla":"Alpsancar, Suzana, and Eugenia Stamboliev. “Tasking AI Fairly. How to Empower AI Practitioners With SXAI?” <i>Social Explainable AI</i>, Springer Nature Singapore, 2026, pp. 557–81, doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_29\">10.1007/978-981-96-5290-7_29</a>.","ieee":"S. Alpsancar and E. Stamboliev, “Tasking AI Fairly. How to Empower AI Practitioners With sXAI?,” in <i>Social Explainable AI</i>, Singapore: Springer Nature Singapore, 2026, pp. 557–581.","chicago":"Alpsancar, Suzana, and Eugenia Stamboliev. “Tasking AI Fairly. How to Empower AI Practitioners With SXAI?” In <i>Social Explainable AI</i>, 557–81. Singapore: Springer Nature Singapore, 2026. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_29\">https://doi.org/10.1007/978-981-96-5290-7_29</a>.","short":"S. Alpsancar, E. Stamboliev, in: Social Explainable AI, Springer Nature Singapore, Singapore, 2026, pp. 557–581.","ama":"Alpsancar S, Stamboliev E. Tasking AI Fairly. How to Empower AI Practitioners With sXAI? In: <i>Social Explainable AI</i>. Springer Nature Singapore; 2026:557-581. doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_29\">10.1007/978-981-96-5290-7_29</a>","bibtex":"@inbook{Alpsancar_Stamboliev_2026, place={Singapore}, title={Tasking AI Fairly. How to Empower AI Practitioners With sXAI?}, DOI={<a href=\"https://doi.org/10.1007/978-981-96-5290-7_29\">10.1007/978-981-96-5290-7_29</a>}, booktitle={Social Explainable AI}, publisher={Springer Nature Singapore}, author={Alpsancar, Suzana and Stamboliev, Eugenia}, year={2026}, pages={557–581} }"},"project":[{"name":"TRR 318; TP B06: Ethik und Normativität der erklärbaren KI","_id":"370"}],"main_file_link":[{"url":"https://doi.org/10.1007/978-981-96-5290-7_29","open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.1007/978-981-96-5290-7_29","year":"2026","title":"Tasking AI Fairly. How to Empower AI Practitioners With sXAI?","author":[{"last_name":"Alpsancar","first_name":"Suzana","full_name":"Alpsancar, Suzana","id":"93637"},{"full_name":"Stamboliev, Eugenia","first_name":"Eugenia","last_name":"Stamboliev"}],"publication_identifier":{"isbn":["9789819652891","9789819652907"]},"date_updated":"2026-03-19T11:53:42Z","publication_status":"published","date_created":"2026-03-19T11:03:30Z","type":"book_chapter","department":[{"_id":"26"},{"_id":"756"}],"publication":"Social Explainable AI","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>\r\n                    This chapter critically examines how social explainable AI (sXAI) can better support AI practitioners in ensuring fairness in AI-based decision-making. We argue for a fundamental shift: Fairness should be understood not as a technical property or an information problem, but as a matter of vulnerability—focusing on the real-world impacts of AI on individuals and groups, especially those most at risk. Hereby, we call for a shift in perspective: from fair AI to\r\n                    <jats:italic>tasking AI fairly</jats:italic>\r\n                    . To motivate our vulnerability approach, we review the “Dutch welfare fraud scandal” (system risk indication—SyRI) and current challenges in the field of fair AI/machine learning (ML). Vulnerability of a person or members of a definable group of persons is a complex relational notion, and not a technical property of a technical system. Accordingly, we suggest several nontechnical strategies that hold the promise to compensate for the insufficiency of purely technical approaches to fairness and other ethical issues in the practical use of AI-based systems. To discuss how sXAI, due to its interactive and adaptive social character, might better fulfill this role than current XAI techniques, we provide a toy scenario for how sXAI might support the virtuous AI practitioner in an ethical inquiry. Finally, we also address challenges and limits of our approach.\r\n                  </jats:p>"}]},{"status":"public","page":"583-616","publisher":"Springer Nature Singapore","_id":"65064","user_id":"93637","citation":{"ama":"Alpsancar S, Klenk M. The Risk of Manipulation and Deception in sXAI. In: <i>Social Explainable AI</i>. Springer Nature Singapore; 2026:583-616. doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_30\">10.1007/978-981-96-5290-7_30</a>","bibtex":"@inbook{Alpsancar_Klenk_2026, place={Singapore}, title={The Risk of Manipulation and Deception in sXAI}, DOI={<a href=\"https://doi.org/10.1007/978-981-96-5290-7_30\">10.1007/978-981-96-5290-7_30</a>}, booktitle={Social Explainable AI}, publisher={Springer Nature Singapore}, author={Alpsancar, Suzana and Klenk, Michael}, year={2026}, pages={583–616} }","mla":"Alpsancar, Suzana, and Michael Klenk. “The Risk of Manipulation and Deception in SXAI.” <i>Social Explainable AI</i>, Springer Nature Singapore, 2026, pp. 583–616, doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_30\">10.1007/978-981-96-5290-7_30</a>.","chicago":"Alpsancar, Suzana, and Michael Klenk. “The Risk of Manipulation and Deception in SXAI.” In <i>Social Explainable AI</i>, 583–616. Singapore: Springer Nature Singapore, 2026. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_30\">https://doi.org/10.1007/978-981-96-5290-7_30</a>.","short":"S. Alpsancar, M. Klenk, in: Social Explainable AI, Springer Nature Singapore, Singapore, 2026, pp. 583–616.","apa":"Alpsancar, S., &#38; Klenk, M. (2026). The Risk of Manipulation and Deception in sXAI. In <i>Social Explainable AI</i> (pp. 583–616). Springer Nature Singapore. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_30\">https://doi.org/10.1007/978-981-96-5290-7_30</a>","ieee":"S. Alpsancar and M. Klenk, “The Risk of Manipulation and Deception in sXAI,” in <i>Social Explainable AI</i>, Singapore: Springer Nature Singapore, 2026, pp. 583–616."},"project":[{"name":"TRR 318: Erklärbarkeit konstruieren","_id":"109"},{"_id":"370","name":"TRR 318; TP B06: Ethik und Normativität der erklärbaren KI"}],"place":"Singapore","oa":"1","year":"2026","title":"The Risk of Manipulation and Deception in sXAI","author":[{"id":"93637","full_name":"Alpsancar, Suzana","last_name":"Alpsancar","first_name":"Suzana"},{"last_name":"Klenk","first_name":"Michael","full_name":"Klenk, Michael"}],"publication_identifier":{"isbn":["9789819652891","9789819652907"]},"publication_status":"published","date_updated":"2026-03-19T11:52:00Z","main_file_link":[{"open_access":"1","url":" https://doi.org/10.1007/978-981-96-5290-7_30"}],"language":[{"iso":"eng"}],"doi":"10.1007/978-981-96-5290-7_30","publication":"Social Explainable AI","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>XAI can minimize the risks of being manipulated and deceived by AI but in turn entails other specific risks. This also applies to sXAI, and the specifically social character of sXAI harbors particular risks that designers and developers should be aware of. In this chapter, we shall discuss the potential opportunities and risks of sXAI. We see a particularly positive potential in the social character of sXAI, which lies in the fact that skillful users, including those with “healthy distrust,” can use the adaptivity of sXAI to produce an explanation that is actually relevant and adequate for them. However, this requires a high level of skills on the part of the user and is thus in contrast to the general promise of efficiency in the use of AI. A potential risk of XAI is that it can be (even more) persuasive, as the interactive involvement and the anthropomorphism strengthen a trustworthy appearance/performance (independent of the adequacy of the sXAI performance).</jats:p>"}],"date_created":"2026-03-19T11:05:30Z","type":"book_chapter","department":[{"_id":"26"},{"_id":"756"}]},{"quality_controlled":"1","citation":{"ama":"Reijers W, Alpsancar S. Values and Norms in sXAI. In: Rohlfing K, Främling K, Lim B, Alpsancar S, Thommes K, eds. <i>Social Explainable AI. Communications of NII Shonan Meetings</i>. Springer; 2026:179-195.","bibtex":"@inbook{Reijers_Alpsancar_2026, place={Singapore}, title={Values and Norms in sXAI}, booktitle={Social explainable AI. Communications of NII Shonan Meetings}, publisher={Springer}, author={Reijers, Wessel and Alpsancar, Suzana}, editor={Rohlfing, Katharina and Främling, Kary and Lim, Brian and Alpsancar, Suzana and Thommes, Kirsten}, year={2026}, pages={179–195} }","mla":"Reijers, Wessel, and Suzana Alpsancar. “Values and Norms in SXAI.” <i>Social Explainable AI. Communications of NII Shonan Meetings</i>, edited by Katharina Rohlfing et al., Springer, 2026, pp. 179–95.","short":"W. Reijers, S. Alpsancar, in: K. Rohlfing, K. Främling, B. Lim, S. Alpsancar, K. Thommes (Eds.), Social Explainable AI. Communications of NII Shonan Meetings, Springer, Singapore, 2026, pp. 179–195.","chicago":"Reijers, Wessel, and Suzana Alpsancar. “Values and Norms in SXAI.” In <i>Social Explainable AI. Communications of NII Shonan Meetings</i>, edited by Katharina Rohlfing, Kary Främling, Brian Lim, Suzana Alpsancar, and Kirsten Thommes, 179–95. Singapore: Springer, 2026.","apa":"Reijers, W., &#38; Alpsancar, S. (2026). Values and Norms in sXAI. In K. Rohlfing, K. Främling, B. Lim, S. Alpsancar, &#38; K. Thommes (Eds.), <i>Social explainable AI. Communications of NII Shonan Meetings</i> (pp. 179–195). Springer.","ieee":"W. Reijers and S. Alpsancar, “Values and Norms in sXAI,” in <i>Social explainable AI. Communications of NII Shonan Meetings</i>, K. Rohlfing, K. Främling, B. Lim, S. Alpsancar, and K. Thommes, Eds. Singapore: Springer, 2026, pp. 179–195."},"oa":"1","place":"Singapore","status":"public","user_id":"93637","editor":[{"last_name":"Rohlfing","first_name":"Katharina","full_name":"Rohlfing, Katharina"},{"first_name":"Kary","last_name":"Främling","full_name":"Främling, Kary"},{"full_name":"Lim, Brian","last_name":"Lim","first_name":"Brian"},{"first_name":"Suzana","last_name":"Alpsancar","full_name":"Alpsancar, Suzana"},{"first_name":"Kirsten","last_name":"Thommes","full_name":"Thommes, Kirsten"}],"page":"179-195","_id":"62709","publisher":"Springer","related_material":{"link":[{"relation":"confirmation","url":"https://link.springer.com/book/9789819652891"}]},"publication":"Social explainable AI. Communications of NII Shonan Meetings","type":"book_chapter","department":[{"_id":"26"},{"_id":"756"}],"date_created":"2025-11-30T07:54:44Z","publication_status":"published","date_updated":"2026-03-19T10:58:47Z","year":"2026","title":"Values and Norms in sXAI","author":[{"id":"102524","full_name":"Reijers, Wessel","first_name":"Wessel","orcid":"0000-0003-2505-1587","last_name":"Reijers"},{"full_name":"Alpsancar, Suzana","first_name":"Suzana","last_name":"Alpsancar","id":"93637"}],"main_file_link":[{"url":"https://doi.org/10.1007/978-981-96-5290-7_10","open_access":"1"}],"language":[{"iso":"eng"}]},{"project":[{"name":"TRR 318: Erklärbarkeit konstruieren","_id":"109"}],"citation":{"ama":"Rohlfing KJ, Främling K, Lim B, Alpsancar S, Thommes K, eds. <i>Social Explainable AI</i>. Springer Nature Singapore; 2026. doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_1\">10.1007/978-981-96-5290-7_1</a>","bibtex":"@book{Rohlfing_Främling_Lim_Alpsancar_Thommes_2026, place={Singapore}, title={Social Explainable AI}, DOI={<a href=\"https://doi.org/10.1007/978-981-96-5290-7_1\">10.1007/978-981-96-5290-7_1</a>}, publisher={Springer Nature Singapore}, year={2026} }","mla":"Rohlfing, Katharina J., et al., editors. <i>Social Explainable AI</i>. Springer Nature Singapore, 2026, doi:<a href=\"https://doi.org/10.1007/978-981-96-5290-7_1\">10.1007/978-981-96-5290-7_1</a>.","chicago":"Rohlfing, Katharina J., Kary Främling, Brian Lim, Suzana Alpsancar, and Kirsten Thommes, eds. <i>Social Explainable AI</i>. Singapore: Springer Nature Singapore, 2026. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_1\">https://doi.org/10.1007/978-981-96-5290-7_1</a>.","short":"K.J. Rohlfing, K. Främling, B. Lim, S. Alpsancar, K. Thommes, eds., Social Explainable AI, Springer Nature Singapore, Singapore, 2026.","apa":"Rohlfing, K. J., Främling, K., Lim, B., Alpsancar, S., &#38; Thommes, K. (Eds.). (2026). <i>Social Explainable AI</i>. Springer Nature Singapore. <a href=\"https://doi.org/10.1007/978-981-96-5290-7_1\">https://doi.org/10.1007/978-981-96-5290-7_1</a>","ieee":"K. J. Rohlfing, K. Främling, B. Lim, S. Alpsancar, and K. Thommes, Eds., <i>Social Explainable AI</i>. Singapore: Springer Nature Singapore, 2026."},"oa":"1","place":"Singapore","status":"public","user_id":"93637","editor":[{"full_name":"Rohlfing, Katharina J.","last_name":"Rohlfing","first_name":"Katharina J.","orcid":"0000-0002-5676-8233","id":"50352"},{"first_name":"Kary","last_name":"Främling","full_name":"Främling, Kary"},{"first_name":"Brian","last_name":"Lim","full_name":"Lim, Brian"},{"id":"93637","full_name":"Alpsancar, Suzana","last_name":"Alpsancar","first_name":"Suzana"},{"id":"72497","first_name":"Kirsten","last_name":"Thommes","full_name":"Thommes, Kirsten"}],"_id":"65065","publisher":"Springer Nature Singapore","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n                  <jats:p>This introduction sets the stage for the present book. Whereas research in eXplainable AI (XAI) is motivated by societal changes and values, technology development largely ignores social aspects. This book aims to address this research gap with a systematic and comprehensive social view on explainable AI. Besides introducing many relevant concepts, the book offers first access to their possible implementation, thus advancing the development of more social XAI. The introduction starts by connecting the topic to the general research field of XAI. The second part defines the novel approach of social eXplainable AI (sXAI) along the three characteristics of social interaction such as patternedness, incrementality, and multimodality. Finally, the third part explains the structure followed by each chapter. The book offers insights not only for readers who work on technology development but also for those working in sociotechnical fields. Addressing an interdisciplinary readership, the book is an invitation for more exchange and further development of the sXAI field.</jats:p>"}],"type":"book_editor","department":[{"_id":"26"},{"_id":"756"}],"date_created":"2026-03-19T11:55:17Z","publication_status":"published","date_updated":"2026-03-19T11:59:42Z","year":"2026","title":"Social Explainable AI","publication_identifier":{"isbn":["9789819652891","9789819652907"]},"doi":"10.1007/978-981-96-5290-7_1","main_file_link":[{"url":"https://link.springer.com/book/10.1007/978-981-96-5290-7","open_access":"1"}],"language":[{"iso":"eng"}]},{"author":[{"first_name":"Thorsten","orcid":"0009-0001-6433-7839","last_name":"Marten","full_name":"Marten, Thorsten","id":"338"},{"id":"44763","full_name":"Ostermann, Moritz","orcid":"https://orcid.org/0000-0003-1146-0443","last_name":"Ostermann","first_name":"Moritz"},{"last_name":"Behm","first_name":"Jonathan","full_name":"Behm, Jonathan"},{"full_name":"Leitenmaier, Samuel","first_name":"Samuel","last_name":"Leitenmaier"}],"publication_identifier":{"eissn":["21991944"]},"title":"NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV","year":"2026","intvolume":"       209","date_updated":"2026-03-23T10:36:09Z","publication_status":"published","language":[{"iso":"ger"}],"doi":"10.3278/BB2601","publication":"Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog","issue":"1","date_created":"2026-03-23T10:30:19Z","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"type":"journal_article","status":"public","_id":"65093","publisher":"wbv Publikation","page":"23-27","volume":209,"user_id":"338","citation":{"ama":"Marten T, Ostermann M, Behm J, Leitenmaier S. NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV. <i>Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog</i>. 2026;209(1):23-27. doi:<a href=\"https://doi.org/10.3278/BB2601\">10.3278/BB2601</a>","bibtex":"@article{Marten_Ostermann_Behm_Leitenmaier_2026, title={NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV}, volume={209}, DOI={<a href=\"https://doi.org/10.3278/BB2601\">10.3278/BB2601</a>}, number={1}, journal={Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog}, publisher={wbv Publikation}, author={Marten, Thorsten and Ostermann, Moritz and Behm, Jonathan and Leitenmaier, Samuel}, year={2026}, pages={23–27} }","mla":"Marten, Thorsten, et al. “NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV.” <i>Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog</i>, vol. 209, no. 1, wbv Publikation, 2026, pp. 23–27, doi:<a href=\"https://doi.org/10.3278/BB2601\">10.3278/BB2601</a>.","chicago":"Marten, Thorsten, Moritz Ostermann, Jonathan Behm, and Samuel Leitenmaier. “NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV.” <i>Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog</i> 209, no. 1 (2026): 23–27. <a href=\"https://doi.org/10.3278/BB2601\">https://doi.org/10.3278/BB2601</a>.","short":"T. Marten, M. Ostermann, J. Behm, S. Leitenmaier, Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog 209 (2026) 23–27.","apa":"Marten, T., Ostermann, M., Behm, J., &#38; Leitenmaier, S. (2026). NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV. <i>Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog</i>, <i>209</i>(1), 23–27. <a href=\"https://doi.org/10.3278/BB2601\">https://doi.org/10.3278/BB2601</a>","ieee":"T. Marten, M. Ostermann, J. Behm, and S. Leitenmaier, “NeMo.bil - Individualisierter öffentlicher Personennahverkehr - iÖV,” <i>Berufsbildung - Zeitschrift für Theorie-Praxis-Dialog</i>, vol. 209, no. 1, pp. 23–27, 2026, doi: <a href=\"https://doi.org/10.3278/BB2601\">10.3278/BB2601</a>."},"quality_controlled":"1"},{"abstract":[{"text":"Various methods to measure the dynamic behavior of particles require the calculation of autocorrelation functions. For this purpose, fast multi-tau correlators have been developed in dedicated hardware, in software, and on FPGAs. However, for methods such as X-ray Photon Correlation Spectroscopy (XPCS), which requires to calculate the autocorrelation function independently for hundreds of thousands to millions of pixels from high-resolution detectors, current approaches rely on offline processing after data acquisition. Moreover, the internal pipeline state of so many independent correlators is far too large to keep it on-chip. In this work, we propose a design approach on FPGAs, where pipeline contexts are stored in off-chip HBM memory. Each compute unit iteratively loads the state for a single pixel, processes a short time series for this pixel, and afterwards writes back the context in a dataflow pipeline. We have implemented the required compute kernels with Vitis HLS and analyze resulting designs on an Alveo U280 card. The design achieves the expected performance and for the first time provides sufficient throughput for current high-end detectors used in XPCS.","lang":"eng"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"publication":"2025 International Conference on Field Programmable Technology (ICFPT)","citation":{"ama":"Tareen AR, Plessl C, Kenter T. Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory. In: <i>2025 International Conference on Field Programmable Technology (ICFPT)</i>. IEEE; 2026. doi:<a href=\"https://doi.org/10.1109/icfpt67023.2025.00027\">10.1109/icfpt67023.2025.00027</a>","short":"A.R. Tareen, C. Plessl, T. Kenter, in: 2025 International Conference on Field Programmable Technology (ICFPT), IEEE, 2026.","chicago":"Tareen, Abdul Rehman, Christian Plessl, and Tobias Kenter. “Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory.” In <i>2025 International Conference on Field Programmable Technology (ICFPT)</i>. IEEE, 2026. <a href=\"https://doi.org/10.1109/icfpt67023.2025.00027\">https://doi.org/10.1109/icfpt67023.2025.00027</a>.","bibtex":"@inproceedings{Tareen_Plessl_Kenter_2026, title={Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory}, DOI={<a href=\"https://doi.org/10.1109/icfpt67023.2025.00027\">10.1109/icfpt67023.2025.00027</a>}, booktitle={2025 International Conference on Field Programmable Technology (ICFPT)}, publisher={IEEE}, author={Tareen, Abdul Rehman and Plessl, Christian and Kenter, Tobias}, year={2026} }","mla":"Tareen, Abdul Rehman, et al. “Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory.” <i>2025 International Conference on Field Programmable Technology (ICFPT)</i>, IEEE, 2026, doi:<a href=\"https://doi.org/10.1109/icfpt67023.2025.00027\">10.1109/icfpt67023.2025.00027</a>.","apa":"Tareen, A. R., Plessl, C., &#38; Kenter, T. (2026). Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory. <i>2025 International Conference on Field Programmable Technology (ICFPT)</i>. <a href=\"https://doi.org/10.1109/icfpt67023.2025.00027\">https://doi.org/10.1109/icfpt67023.2025.00027</a>","ieee":"A. R. Tareen, C. Plessl, and T. Kenter, “Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory,” 2026, doi: <a href=\"https://doi.org/10.1109/icfpt67023.2025.00027\">10.1109/icfpt67023.2025.00027</a>."},"type":"conference","department":[{"_id":"27"},{"_id":"518"}],"date_created":"2026-03-24T09:02:22Z","publication_status":"published","date_updated":"2026-03-24T09:04:31Z","year":"2026","status":"public","title":"Fast Multi-Tau Correlators on FPGA with Context Switching From and to High- Bandwidth Memory","author":[{"last_name":"Tareen","first_name":"Abdul Rehman","full_name":"Tareen, Abdul Rehman","id":"76938"},{"full_name":"Plessl, Christian","first_name":"Christian","last_name":"Plessl","orcid":"0000-0001-5728-9982","id":"16153"},{"id":"3145","first_name":"Tobias","last_name":"Kenter","full_name":"Kenter, Tobias"}],"user_id":"3145","doi":"10.1109/icfpt67023.2025.00027","publisher":"IEEE","_id":"65101","language":[{"iso":"eng"}]},{"date_created":"2026-03-23T12:28:33Z","type":"journal_article","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"publication":"Physical Review Applied","issue":"3","abstract":[{"text":"<jats:p>\r\n                    The development of practical sensors for optical coherence tomography (OCT) with undetected photons requires miniaturization via integration. To be practical, these sensors must exhibit a large spectral bandwidth and a high brightness, which are linked to a high axial resolution and a sufficient signal-to-noise ratio, respectively. Here, we combine these requirements in a scheme for OCT measurements with undetected photons based on nonlinear\r\n                    <a:math xmlns:a=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\">\r\n                      <a:mi>Ti</a:mi>\r\n                      <a:mo>:</a:mo>\r\n                      <a:msub>\r\n                        <a:mrow>\r\n                          <a:mi>Li</a:mi>\r\n                          <a:mi>Nb</a:mi>\r\n                          <a:mi mathvariant=\"normal\">O</a:mi>\r\n                        </a:mrow>\r\n                        <a:mn>3</a:mn>\r\n                      </a:msub>\r\n                    </a:math>\r\n                    waveguides. We investigate the performance benchmarks of the commonly used SU(1,1) scheme in comparison to an induced-coherence scheme and find that the latter is actually better suited when implementing measurements with undetected photons in integrated systems. In both schemes, we perform pump-gain optimization and OCT measurements with undetected photons with an axial resolution as low as\r\n                    <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\">\r\n                      <d:mn>28</d:mn>\r\n                      <d:mspace width=\"0.2em\"/>\r\n                      <d:mtext fontfamily=\"times\">μ</d:mtext>\r\n                      <d:mrow>\r\n                        <d:mi mathvariant=\"normal\">m</d:mi>\r\n                      </d:mrow>\r\n                    </d:math>\r\n                    .\r\n                  </jats:p>","lang":"eng"}],"article_number":"034031","language":[{"iso":"eng"}],"doi":"10.1103/cwsx-42c4","title":"Toward integrated sensors for optimized optical coherence tomography with undetected photons","year":"2026","author":[{"id":"88149","full_name":"Roeder, Franz","last_name":"Roeder","first_name":"Franz"},{"full_name":"Pollmann, René","first_name":"René","last_name":"Pollmann","id":"78890"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"orcid":"https://orcid.org/0000-0002-5693-3083","first_name":"Christof","last_name":"Eigner","full_name":"Eigner, Christof","id":"13244"},{"full_name":"Brecht, Benjamin","first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150"},{"full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn","id":"26263"}],"publication_identifier":{"issn":["2331-7019"]},"date_updated":"2026-03-25T07:59:04Z","publication_status":"published","intvolume":"        25","citation":{"short":"F. Roeder, R. Pollmann, V. Quiring, C. Eigner, B. Brecht, C. Silberhorn, Physical Review Applied 25 (2026).","chicago":"Roeder, Franz, René Pollmann, Viktor Quiring, Christof Eigner, Benjamin Brecht, and Christine Silberhorn. “Toward Integrated Sensors for Optimized Optical Coherence Tomography with Undetected Photons.” <i>Physical Review Applied</i> 25, no. 3 (2026). <a href=\"https://doi.org/10.1103/cwsx-42c4\">https://doi.org/10.1103/cwsx-42c4</a>.","ieee":"F. Roeder, R. Pollmann, V. Quiring, C. Eigner, B. Brecht, and C. Silberhorn, “Toward integrated sensors for optimized optical coherence tomography with undetected photons,” <i>Physical Review Applied</i>, vol. 25, no. 3, Art. no. 034031, 2026, doi: <a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>.","apa":"Roeder, F., Pollmann, R., Quiring, V., Eigner, C., Brecht, B., &#38; Silberhorn, C. (2026). Toward integrated sensors for optimized optical coherence tomography with undetected photons. <i>Physical Review Applied</i>, <i>25</i>(3), Article 034031. <a href=\"https://doi.org/10.1103/cwsx-42c4\">https://doi.org/10.1103/cwsx-42c4</a>","bibtex":"@article{Roeder_Pollmann_Quiring_Eigner_Brecht_Silberhorn_2026, title={Toward integrated sensors for optimized optical coherence tomography with undetected photons}, volume={25}, DOI={<a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>}, number={3034031}, journal={Physical Review Applied}, publisher={American Physical Society (APS)}, author={Roeder, Franz and Pollmann, René and Quiring, Viktor and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2026} }","ama":"Roeder F, Pollmann R, Quiring V, Eigner C, Brecht B, Silberhorn C. Toward integrated sensors for optimized optical coherence tomography with undetected photons. <i>Physical Review Applied</i>. 2026;25(3). doi:<a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>","mla":"Roeder, Franz, et al. “Toward Integrated Sensors for Optimized Optical Coherence Tomography with Undetected Photons.” <i>Physical Review Applied</i>, vol. 25, no. 3, 034031, American Physical Society (APS), 2026, doi:<a href=\"https://doi.org/10.1103/cwsx-42c4\">10.1103/cwsx-42c4</a>."},"publisher":"American Physical Society (APS)","_id":"65094","user_id":"27150","volume":25,"status":"public"},{"citation":{"bibtex":"@article{Folge_Serino_Mišta_Brecht_Silberhorn_Řeháček_Hradil_2026, title={Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals}, volume={13}, DOI={<a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>}, number={3548}, journal={Optica}, publisher={Optica Publishing Group}, author={Folge, Patrick Fabian and Serino, Laura Maria and Mišta, Ladislav and Brecht, Benjamin and Silberhorn, Christine and Řeháček, Jaroslav and Hradil, Zdeněk}, year={2026} }","ama":"Folge PF, Serino LM, Mišta L, et al. Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals. <i>Optica</i>. 2026;13(3). doi:<a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>","mla":"Folge, Patrick Fabian, et al. “Quantum-Limited Detection of the Arrival Time and the Carrier Frequency of Time-Dependent Signals.” <i>Optica</i>, vol. 13, no. 3, 548, Optica Publishing Group, 2026, doi:<a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>.","chicago":"Folge, Patrick Fabian, Laura Maria Serino, Ladislav Mišta, Benjamin Brecht, Christine Silberhorn, Jaroslav Řeháček, and Zdeněk Hradil. “Quantum-Limited Detection of the Arrival Time and the Carrier Frequency of Time-Dependent Signals.” <i>Optica</i> 13, no. 3 (2026). <a href=\"https://doi.org/10.1364/optica.579459\">https://doi.org/10.1364/optica.579459</a>.","short":"P.F. Folge, L.M. Serino, L. Mišta, B. Brecht, C. Silberhorn, J. Řeháček, Z. Hradil, Optica 13 (2026).","ieee":"P. F. Folge <i>et al.</i>, “Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals,” <i>Optica</i>, vol. 13, no. 3, Art. no. 548, 2026, doi: <a href=\"https://doi.org/10.1364/optica.579459\">10.1364/optica.579459</a>.","apa":"Folge, P. F., Serino, L. M., Mišta, L., Brecht, B., Silberhorn, C., Řeháček, J., &#38; Hradil, Z. (2026). Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals. <i>Optica</i>, <i>13</i>(3), Article 548. <a href=\"https://doi.org/10.1364/optica.579459\">https://doi.org/10.1364/optica.579459</a>"},"user_id":"27150","volume":13,"publisher":"Optica Publishing Group","_id":"65096","status":"public","type":"journal_article","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"date_created":"2026-03-23T12:30:02Z","abstract":[{"text":"<jats:p>\r\n                    Precise measurements of both the arrival time and carrier frequency of light pulses are essential for time–frequency-encoded quantum technologies. Quantum mechanics, however, imposes fundamental limits on the simultaneous determination of these quantities. In this work, we derive and experimentally verify the quantum uncertainty bounds governing joint time–frequency measurements. We show that when detection is restricted to finite time windows, the problem is naturally described by a quantum rotor, rendering the commonly used Heisenberg uncertainty relation inapplicable. We further propose an optimal detection scheme that saturates these fundamental limits. By sampling the\r\n                    <jats:italic toggle=\"yes\">Q</jats:italic>\r\n                    -function, we demonstrate the reconstruction of the Wigner function beyond the harmonic oscillator. Using an experimental implementation based on a quantum pulse gate, we confirm that the proposed scheme approaches the ultimate quantum limit for simultaneous time–frequency measurements. These results provide a framework for joint time–frequency detection with direct implications for precision measurements and quantum information processing.\r\n                  </jats:p>","lang":"eng"}],"publication":"Optica","issue":"3","doi":"10.1364/optica.579459","article_number":"548","language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2026-03-25T07:59:23Z","intvolume":"        13","year":"2026","title":"Quantum-limited detection of the arrival time and the carrier frequency of time-dependent signals","publication_identifier":{"issn":["2334-2536"]},"author":[{"full_name":"Folge, Patrick Fabian","first_name":"Patrick Fabian","last_name":"Folge","id":"88605"},{"id":"88242","last_name":"Serino","first_name":"Laura Maria","full_name":"Serino, Laura Maria"},{"last_name":"Mišta","first_name":"Ladislav","full_name":"Mišta, Ladislav"},{"first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","full_name":"Brecht, Benjamin","id":"27150"},{"id":"26263","first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine"},{"last_name":"Řeháček","first_name":"Jaroslav","full_name":"Řeháček, Jaroslav"},{"full_name":"Hradil, Zdeněk","first_name":"Zdeněk","last_name":"Hradil"}]},{"oa":"1","citation":{"short":"T. Schapeler, I. Mischke, F. Schlue, M. Stefszky, B. Brecht, C. Silberhorn, T. Bartley, APL Quantum 3 (2026).","chicago":"Schapeler, Timon, Isabell Mischke, Fabian Schlue, Michael Stefszky, Benjamin Brecht, Christine Silberhorn, and Tim Bartley. “Practical Considerations for Assignment of Photon Numbers with SNSPDs.” <i>APL Quantum</i> 3, no. 1 (2026). <a href=\"https://doi.org/10.1063/5.0304127\">https://doi.org/10.1063/5.0304127</a>.","apa":"Schapeler, T., Mischke, I., Schlue, F., Stefszky, M., Brecht, B., Silberhorn, C., &#38; Bartley, T. (2026). Practical considerations for assignment of photon numbers with SNSPDs. <i>APL Quantum</i>, <i>3</i>(1), Article 016102. <a href=\"https://doi.org/10.1063/5.0304127\">https://doi.org/10.1063/5.0304127</a>","ieee":"T. Schapeler <i>et al.</i>, “Practical considerations for assignment of photon numbers with SNSPDs,” <i>APL Quantum</i>, vol. 3, no. 1, Art. no. 016102, 2026, doi: <a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>.","ama":"Schapeler T, Mischke I, Schlue F, et al. Practical considerations for assignment of photon numbers with SNSPDs. <i>APL Quantum</i>. 2026;3(1). doi:<a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>","bibtex":"@article{Schapeler_Mischke_Schlue_Stefszky_Brecht_Silberhorn_Bartley_2026, title={Practical considerations for assignment of photon numbers with SNSPDs}, volume={3}, DOI={<a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>}, number={1016102}, journal={APL Quantum}, publisher={AIP Publishing}, author={Schapeler, Timon and Mischke, Isabell and Schlue, Fabian and Stefszky, Michael and Brecht, Benjamin and Silberhorn, Christine and Bartley, Tim}, year={2026} }","mla":"Schapeler, Timon, et al. “Practical Considerations for Assignment of Photon Numbers with SNSPDs.” <i>APL Quantum</i>, vol. 3, no. 1, 016102, AIP Publishing, 2026, doi:<a href=\"https://doi.org/10.1063/5.0304127\">10.1063/5.0304127</a>."},"project":[{"name":"PhoQuant: Photonische Quantencomputer -  Quantencomputing Testplattform","_id":"191"},{"name":"ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors in Low-Light Applications","_id":"239"}],"_id":"63451","publisher":"AIP Publishing","volume":3,"user_id":"27150","status":"public","date_created":"2026-01-05T10:00:58Z","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"type":"journal_article","publication":"APL Quantum","issue":"1","abstract":[{"text":"<jats:p>Superconducting nanowire single-photon detectors (SNSPDs) can enable photon-number resolution (PNR) based on accurate measurements of the detector’s response time to few-photon optical pulses. In this work, we investigate the impact of the optical pulse shape and duration on the accuracy of this method. We find that Gaussian temporal pulse shapes yield cleaner arrival-time histograms and, thus, more accurate PNR, compared to bandpass-filtered pulses of equal bandwidth. For low system jitter and an optical pulse duration comparable to the other jitter contributions, photon numbers can be discriminated in our system with a commercial SNSPD. At 60 ps optical pulse duration, photon-number discrimination is significantly reduced. Furthermore, we highlight the importance of using the correct arrival-time histogram model when analyzing photon-number assignment. Using exponentially modified Gaussian distributions, instead of the commonly used Gaussian distributions, we can more accurately determine photon-number misidentification probabilities. Finally, we reconstruct the positive operator-valued measures of the detector, revealing sharp features that indicate the intrinsic PNR capabilities.</jats:p>","lang":"eng"}],"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1"}],"article_number":"016102","doi":"10.1063/5.0304127","author":[{"full_name":"Schapeler, Timon","last_name":"Schapeler","first_name":"Timon","orcid":"0000-0001-7652-1716","id":"55629"},{"full_name":"Mischke, Isabell","last_name":"Mischke","first_name":"Isabell"},{"id":"63579","last_name":"Schlue","first_name":"Fabian","full_name":"Schlue, Fabian"},{"id":"42777","full_name":"Stefszky, Michael","first_name":"Michael","last_name":"Stefszky"},{"id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","first_name":"Benjamin"},{"id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn"},{"first_name":"Tim","last_name":"Bartley","full_name":"Bartley, Tim","id":"49683"}],"publication_identifier":{"issn":["2835-0103"]},"year":"2026","title":"Practical considerations for assignment of photon numbers with SNSPDs","intvolume":"         3","date_updated":"2026-03-25T08:00:27Z","publication_status":"published"},{"publication":"Physical Review A","issue":"3","abstract":[{"lang":"eng","text":"<jats:p>\r\n                    We provide experimental validation of tight entropic uncertainty relations for the Shannon entropies of observables with mutually unbiased eigenstates in high dimensions. In particular, we address the cases of dimensions\r\n                    <a:math xmlns:a=\"http://www.w3.org/1998/Math/MathML\">\r\n                      <a:mrow>\r\n                        <a:mi>d</a:mi>\r\n                        <a:mo>=</a:mo>\r\n                        <a:mn>3</a:mn>\r\n                      </a:mrow>\r\n                    </a:math>\r\n                    , 4, and 5 and consider from 2 to\r\n                    <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\">\r\n                      <b:mrow>\r\n                        <b:mi>d</b:mi>\r\n                        <b:mo>+</b:mo>\r\n                        <b:mn>1</b:mn>\r\n                      </b:mrow>\r\n                    </b:math>\r\n                    mutually unbiased bases. The experiment is based on pulsed frequency bins measured with a multioutput quantum pulse gate, which can perform projective measurements on a complete high-dimensional basis in the time-frequency domain. Our results fit the theoretical predictions: the bound on the sum of the entropies is never violated and is saturated by the states that minimize the uncertainty relations.\r\n                  </jats:p>"}],"date_created":"2026-03-23T12:29:23Z","type":"journal_article","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"title":"Experimental entropic uncertainty relations in dimensions three to five","year":"2026","author":[{"id":"88242","full_name":"Serino, Laura Maria","first_name":"Laura Maria","last_name":"Serino"},{"last_name":"Chesi","first_name":"Giovanni","full_name":"Chesi, Giovanni"},{"id":"27150","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin","last_name":"Brecht"},{"full_name":"Maccone, Lorenzo","first_name":"Lorenzo","last_name":"Maccone"},{"full_name":"Macchiavello, Chiara","first_name":"Chiara","last_name":"Macchiavello"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"publication_identifier":{"issn":["2469-9926","2469-9934"]},"date_updated":"2026-03-25T07:59:36Z","publication_status":"published","intvolume":"       113","article_number":"032420","language":[{"iso":"eng"}],"doi":"10.1103/f6c4-jtlc","citation":{"bibtex":"@article{Serino_Chesi_Brecht_Maccone_Macchiavello_Silberhorn_2026, title={Experimental entropic uncertainty relations in dimensions three to five}, volume={113}, DOI={<a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>}, number={3032420}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Serino, Laura Maria and Chesi, Giovanni and Brecht, Benjamin and Maccone, Lorenzo and Macchiavello, Chiara and Silberhorn, Christine}, year={2026} }","short":"L.M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, C. Silberhorn, Physical Review A 113 (2026).","ama":"Serino LM, Chesi G, Brecht B, Maccone L, Macchiavello C, Silberhorn C. Experimental entropic uncertainty relations in dimensions three to five. <i>Physical Review A</i>. 2026;113(3). doi:<a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>","chicago":"Serino, Laura Maria, Giovanni Chesi, Benjamin Brecht, Lorenzo Maccone, Chiara Macchiavello, and Christine Silberhorn. “Experimental Entropic Uncertainty Relations in Dimensions Three to Five.” <i>Physical Review A</i> 113, no. 3 (2026). <a href=\"https://doi.org/10.1103/f6c4-jtlc\">https://doi.org/10.1103/f6c4-jtlc</a>.","ieee":"L. M. Serino, G. Chesi, B. Brecht, L. Maccone, C. Macchiavello, and C. Silberhorn, “Experimental entropic uncertainty relations in dimensions three to five,” <i>Physical Review A</i>, vol. 113, no. 3, Art. no. 032420, 2026, doi: <a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>.","mla":"Serino, Laura Maria, et al. “Experimental Entropic Uncertainty Relations in Dimensions Three to Five.” <i>Physical Review A</i>, vol. 113, no. 3, 032420, American Physical Society (APS), 2026, doi:<a href=\"https://doi.org/10.1103/f6c4-jtlc\">10.1103/f6c4-jtlc</a>.","apa":"Serino, L. M., Chesi, G., Brecht, B., Maccone, L., Macchiavello, C., &#38; Silberhorn, C. (2026). Experimental entropic uncertainty relations in dimensions three to five. <i>Physical Review A</i>, <i>113</i>(3), Article 032420. <a href=\"https://doi.org/10.1103/f6c4-jtlc\">https://doi.org/10.1103/f6c4-jtlc</a>"},"status":"public","_id":"65095","publisher":"American Physical Society (APS)","user_id":"27150","volume":113},{"intvolume":"        26","publication_status":"published","date_updated":"2026-04-01T04:54:17Z","publication_identifier":{"issn":["1617-7061","1617-7061"]},"author":[{"id":"52037","full_name":"Börger, Alexander","first_name":"Alexander","last_name":"Börger"},{"first_name":"Rolf","last_name":"Mahnken","full_name":"Mahnken, Rolf"},{"id":"75","first_name":"Ismail","last_name":"Caylak","full_name":"Caylak, Ismail"},{"full_name":"Ostwald, Richard","first_name":"Richard","orcid":"0000-0003-2147-8444","last_name":"Ostwald","id":"106876"}],"title":"Aspects of Parameter Identification for a Micromorphic Continuum applied to a Cold‐Box Sand","year":"2026","doi":"10.1002/pamm.70093","language":[{"iso":"eng"}],"article_number":"e70093","abstract":[{"text":"<jats:title>ABSTRACT</jats:title>\r\n                  <jats:p>This work is concerned with the modeling of a cold‐box sand, a composition of sand grains and a resin binder. To this end, experiments are performed, which show the following characteristics: localization phenomena in the form of a shear band, softening behavior in the force‐displacement curve, and asymmetric behavior for compression and tension. To model this complex material behavior, a micromorphic continuum is used. In the present contribution, we focus on the linear‐elastic regime and demonstrate the identifiability of micromorphic material parameters under deliberately induced inhomogeneous deformation states. In addition to the degrees of freedom of a classical continuum, the micromorphic model has additional degrees of freedom, introduced here in a phenomenological sense to represent kinematically enriched deformation modes associated with the granular microstructure. Accordingly, the micromorphic fields are not interpreted as a separate physical scale (e.g., “binder” vs. “grains”), but as an effective continuum description at the specimen scale. This contribution addresses parameter identification for a micromorphic model of cold‐box sand, with a clear separation between homogeneous deformation states governing classical elastic parameters and inhomogeneous states required to activate and identify micromorphic length‐scale parameters. The main challenge lies in identifying the micro material parameters. To determine these, the corresponding gradient terms in the constitutive formulation must be triggered via properly tuned experiments. Micro‐parameter identification is demonstrated using synthetic data generated from a boundary‐value problem with inhomogeneous displacement fields. The chosen benchmark enables controlled activation of gradient terms and thereby renders optimization‐based identification of micromorphic parameters feasible. The synthetic example is deliberately chosen to assess feasibility and identifiability under controlled conditions, thereby isolating micromorphic identifiability aspects from experimental uncertainties. The novelty of the contribution lies in explicitly linking micromorphic parameter identifiability to kinematic inhomogeneity, and in demonstrating this link within a tractable forward– inverse setting for a linear‐elastic micromorphic continuum.</jats:p>","lang":"eng"}],"issue":"2","publication":"Proceedings in Applied Mathematics and Mechanics","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"type":"journal_article","date_created":"2026-04-01T04:52:34Z","status":"public","volume":26,"user_id":"85414","_id":"65266","publisher":"Wiley","quality_controlled":"1","citation":{"ieee":"A. Börger, R. Mahnken, I. Caylak, and R. Ostwald, “Aspects of Parameter Identification for a Micromorphic Continuum applied to a Cold‐Box Sand,” <i>Proceedings in Applied Mathematics and Mechanics</i>, vol. 26, no. 2, Art. no. e70093, 2026, doi: <a href=\"https://doi.org/10.1002/pamm.70093\">10.1002/pamm.70093</a>.","apa":"Börger, A., Mahnken, R., Caylak, I., &#38; Ostwald, R. (2026). Aspects of Parameter Identification for a Micromorphic Continuum applied to a Cold‐Box Sand. <i>Proceedings in Applied Mathematics and Mechanics</i>, <i>26</i>(2), Article e70093. <a href=\"https://doi.org/10.1002/pamm.70093\">https://doi.org/10.1002/pamm.70093</a>","short":"A. Börger, R. Mahnken, I. Caylak, R. Ostwald, Proceedings in Applied Mathematics and Mechanics 26 (2026).","chicago":"Börger, Alexander, Rolf Mahnken, Ismail Caylak, and Richard Ostwald. “Aspects of Parameter Identification for a Micromorphic Continuum Applied to a Cold‐Box Sand.” <i>Proceedings in Applied Mathematics and Mechanics</i> 26, no. 2 (2026). <a href=\"https://doi.org/10.1002/pamm.70093\">https://doi.org/10.1002/pamm.70093</a>.","mla":"Börger, Alexander, et al. “Aspects of Parameter Identification for a Micromorphic Continuum Applied to a Cold‐Box Sand.” <i>Proceedings in Applied Mathematics and Mechanics</i>, vol. 26, no. 2, e70093, Wiley, 2026, doi:<a href=\"https://doi.org/10.1002/pamm.70093\">10.1002/pamm.70093</a>.","bibtex":"@article{Börger_Mahnken_Caylak_Ostwald_2026, title={Aspects of Parameter Identification for a Micromorphic Continuum applied to a Cold‐Box Sand}, volume={26}, DOI={<a href=\"https://doi.org/10.1002/pamm.70093\">10.1002/pamm.70093</a>}, number={2e70093}, journal={Proceedings in Applied Mathematics and Mechanics}, publisher={Wiley}, author={Börger, Alexander and Mahnken, Rolf and Caylak, Ismail and Ostwald, Richard}, year={2026} }","ama":"Börger A, Mahnken R, Caylak I, Ostwald R. Aspects of Parameter Identification for a Micromorphic Continuum applied to a Cold‐Box Sand. <i>Proceedings in Applied Mathematics and Mechanics</i>. 2026;26(2). doi:<a href=\"https://doi.org/10.1002/pamm.70093\">10.1002/pamm.70093</a>"}},{"publication":"Quantum Sensing and Nano Electronics and Photonics XXII","citation":{"ama":"Kim M, Devaraj V, Seo H-S, et al. Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting. In: Razeghi M, Khodaparast GA, Vitiello MS, eds. <i>Quantum Sensing and Nano Electronics and Photonics XXII</i>. SPIE; 2026. doi:<a href=\"https://doi.org/10.1117/12.3095416\">10.1117/12.3095416</a>","short":"M. Kim, V. Devaraj, H.-S. Seo, S. Eom, J.-S. Lee, D. Lee, T. Zentgraf, J.-M. Lee, M.Y. Jeon, in: M. Razeghi, G.A. Khodaparast, M.S. Vitiello (Eds.), Quantum Sensing and Nano Electronics and Photonics XXII, SPIE, 2026.","chicago":"Kim, Minjun, Vasanthan Devaraj, Hyeon-Seok Seo, Seongjae Eom, Jeong-Su Lee, Donghan Lee, Thomas Zentgraf, Jong-Min Lee, and Min Yong Jeon. “Fabrication of Uniform, High-Field-Enhanced Plasmonic Satellite Clusters Using Multidewetting.” In <i>Quantum Sensing and Nano Electronics and Photonics XXII</i>, edited by Manijeh Razeghi, Giti A. Khodaparast, and Miriam S. Vitiello. SPIE, 2026. <a href=\"https://doi.org/10.1117/12.3095416\">https://doi.org/10.1117/12.3095416</a>.","bibtex":"@inproceedings{Kim_Devaraj_Seo_Eom_Lee_Lee_Zentgraf_Lee_Jeon_2026, title={Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting}, DOI={<a href=\"https://doi.org/10.1117/12.3095416\">10.1117/12.3095416</a>}, booktitle={Quantum Sensing and Nano Electronics and Photonics XXII}, publisher={SPIE}, author={Kim, Minjun and Devaraj, Vasanthan and Seo, Hyeon-Seok and Eom, Seongjae and Lee, Jeong-Su and Lee, Donghan and Zentgraf, Thomas and Lee, Jong-Min and Jeon, Min Yong}, editor={Razeghi, Manijeh and Khodaparast, Giti A. and Vitiello, Miriam S.}, year={2026} }","mla":"Kim, Minjun, et al. “Fabrication of Uniform, High-Field-Enhanced Plasmonic Satellite Clusters Using Multidewetting.” <i>Quantum Sensing and Nano Electronics and Photonics XXII</i>, edited by Manijeh Razeghi et al., SPIE, 2026, doi:<a href=\"https://doi.org/10.1117/12.3095416\">10.1117/12.3095416</a>.","apa":"Kim, M., Devaraj, V., Seo, H.-S., Eom, S., Lee, J.-S., Lee, D., Zentgraf, T., Lee, J.-M., &#38; Jeon, M. Y. (2026). Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting. In M. Razeghi, G. A. Khodaparast, &#38; M. S. Vitiello (Eds.), <i>Quantum Sensing and Nano Electronics and Photonics XXII</i>. SPIE. <a href=\"https://doi.org/10.1117/12.3095416\">https://doi.org/10.1117/12.3095416</a>","ieee":"M. Kim <i>et al.</i>, “Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting,” in <i>Quantum Sensing and Nano Electronics and Photonics XXII</i>, 2026, doi: <a href=\"https://doi.org/10.1117/12.3095416\">10.1117/12.3095416</a>."},"type":"conference","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"date_created":"2026-04-07T04:29:28Z","publication_status":"published","date_updated":"2026-04-07T04:30:07Z","year":"2026","status":"public","title":"Fabrication of uniform, high-field-enhanced plasmonic satellite clusters using multidewetting","author":[{"last_name":"Kim","first_name":"Minjun","full_name":"Kim, Minjun"},{"full_name":"Devaraj, Vasanthan","first_name":"Vasanthan","last_name":"Devaraj"},{"first_name":"Hyeon-Seok","last_name":"Seo","full_name":"Seo, Hyeon-Seok"},{"first_name":"Seongjae","last_name":"Eom","full_name":"Eom, Seongjae"},{"first_name":"Jeong-Su","last_name":"Lee","full_name":"Lee, Jeong-Su"},{"full_name":"Lee, Donghan","last_name":"Lee","first_name":"Donghan"},{"last_name":"Zentgraf","orcid":"0000-0002-8662-1101","first_name":"Thomas","full_name":"Zentgraf, Thomas","id":"30525"},{"full_name":"Lee, Jong-Min","first_name":"Jong-Min","last_name":"Lee"},{"first_name":"Min Yong","last_name":"Jeon","full_name":"Jeon, Min Yong"}],"user_id":"30525","doi":"10.1117/12.3095416","editor":[{"first_name":"Manijeh","last_name":"Razeghi","full_name":"Razeghi, Manijeh"},{"full_name":"Khodaparast, Giti A.","last_name":"Khodaparast","first_name":"Giti A."},{"last_name":"Vitiello","first_name":"Miriam S.","full_name":"Vitiello, Miriam S."}],"_id":"65357","publisher":"SPIE","language":[{"iso":"eng"}]},{"status":"public","user_id":"30525","publisher":"American Chemical Society (ACS)","_id":"65460","quality_controlled":"1","project":[{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142; TP A08: Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten","_id":"65"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"}],"citation":{"mla":"Aschwanden, Rebecca, et al. “Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light.” <i>ACS Photonics</i>, acsphotonics.6c00096, American Chemical Society (ACS), 2026, doi:<a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>.","ama":"Aschwanden R, Claro-Rodríguez N, Zhao R, et al. Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light. <i>ACS Photonics</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>","bibtex":"@article{Aschwanden_Claro-Rodríguez_Zhao_Kallert_Krieger_Buchinger_Covre da Silva_Stroj_Rota_Höfling_et al._2026, title={Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>}, number={acsphotonics.6c00096}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Aschwanden, Rebecca and Claro-Rodríguez, Nicolás and Zhao, Ruizhe and Kallert, Patricia Anna Maria and Krieger, Tobias and Buchinger, Quirin and Covre da Silva, Saimon F. and Stroj, Sandra and Rota, Michele and Höfling, Sven and et al.}, year={2026} }","apa":"Aschwanden, R., Claro-Rodríguez, N., Zhao, R., Kallert, P. A. M., Krieger, T., Buchinger, Q., Covre da Silva, S. F., Stroj, S., Rota, M., Höfling, S., Huber-Loyola, T., Rastelli, A., Trotta, R., Huang, L., Bartley, T., Jöns, K., &#38; Zentgraf, T. (2026). Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light. <i>ACS Photonics</i>, Article acsphotonics.6c00096. <a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">https://doi.org/10.1021/acsphotonics.6c00096</a>","ieee":"R. Aschwanden <i>et al.</i>, “Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light,” <i>ACS Photonics</i>, Art. no. acsphotonics.6c00096, 2026, doi: <a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">10.1021/acsphotonics.6c00096</a>.","short":"R. Aschwanden, N. Claro-Rodríguez, R. Zhao, P.A.M. Kallert, T. Krieger, Q. Buchinger, S.F. Covre da Silva, S. Stroj, M. Rota, S. Höfling, T. Huber-Loyola, A. Rastelli, R. Trotta, L. Huang, T. Bartley, K. Jöns, T. Zentgraf, ACS Photonics (2026).","chicago":"Aschwanden, Rebecca, Nicolás Claro-Rodríguez, Ruizhe Zhao, Patricia Anna Maria Kallert, Tobias Krieger, Quirin Buchinger, Saimon F. Covre da Silva, et al. “Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light.” <i>ACS Photonics</i>, 2026. <a href=\"https://doi.org/10.1021/acsphotonics.6c00096\">https://doi.org/10.1021/acsphotonics.6c00096</a>."},"external_id":{"arxiv":["2603.25090"]},"date_updated":"2026-04-20T05:01:00Z","publication_status":"published","article_type":"original","title":"Cascaded Metasurface Interferometer for Multipath Interference with Classical and Quantum Light","year":"2026","author":[{"full_name":"Aschwanden, Rebecca","first_name":"Rebecca","last_name":"Aschwanden"},{"full_name":"Claro-Rodríguez, Nicolás","last_name":"Claro-Rodríguez","first_name":"Nicolás"},{"full_name":"Zhao, Ruizhe","first_name":"Ruizhe","last_name":"Zhao"},{"id":"72332","orcid":"0009-0007-5230-0223","last_name":"Kallert","first_name":"Patricia Anna Maria","full_name":"Kallert, Patricia Anna Maria"},{"last_name":"Krieger","first_name":"Tobias","full_name":"Krieger, Tobias"},{"full_name":"Buchinger, Quirin","first_name":"Quirin","last_name":"Buchinger"},{"full_name":"Covre da Silva, Saimon F.","last_name":"Covre da Silva","first_name":"Saimon F."},{"first_name":"Sandra","last_name":"Stroj","full_name":"Stroj, Sandra"},{"last_name":"Rota","first_name":"Michele","full_name":"Rota, Michele"},{"full_name":"Höfling, Sven","first_name":"Sven","last_name":"Höfling"},{"full_name":"Huber-Loyola, Tobias","first_name":"Tobias","last_name":"Huber-Loyola"},{"first_name":"Armando","last_name":"Rastelli","full_name":"Rastelli, Armando"},{"first_name":"Rinaldo","last_name":"Trotta","full_name":"Trotta, Rinaldo"},{"full_name":"Huang, Lingling","first_name":"Lingling","last_name":"Huang"},{"id":"49683","last_name":"Bartley","first_name":"Tim","full_name":"Bartley, Tim"},{"first_name":"Klaus","last_name":"Jöns","full_name":"Jöns, Klaus","id":"85353"},{"id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101"}],"publication_identifier":{"issn":["2330-4022","2330-4022"]},"doi":"10.1021/acsphotonics.6c00096","main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsphotonics.6c00096"}],"article_number":"acsphotonics.6c00096","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Beamsplitters represent fundamental components in both classical and quantum optical systems, enabling the distribution of light, as well as the generation of interference, superposition, and entanglement. However, optical networks constructed from conventional bulk 2 × 2-beamsplitters encounter inherent scalability issues, as the number of required beamsplitters scales quadratically with the number of optical modes for a fully connected network. Metasurfaces offer a promising route to\r\novercome these constraints. By manipulating light at the wavelength scale, compact optical components with advanced functionalities can be constructed, which address several modes simultaneously. In this work, we design and experimentally utilize a metasurface as a multiport beamsplitter. Furthermore, we realized a multimode interferometer composed of two cascaded metasurfaces. We characterize the individual and cascaded metasurfaces by using classical light, showing controllable splitting ratios through tunable phase relations. We then expand the approach to quantum light, employing single photons to demonstrate second- and third-order photon correlations as well as single photon interference across multiple spatial paths. These results establish metasurface-based multiport beamsplitters as a scalable and reconfigurable platform bridging classical and quantum photonics. "}],"publication":"ACS Photonics","type":"journal_article","keyword":["metasurface","beamsplitter","interferometer","quantum network","single photons","nanophotonics"],"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"date_created":"2026-04-20T04:52:59Z"},{"quality_controlled":"1","citation":{"apa":"Wetter, H., Wingenbach, J., Rehberg, F., Gao, W., Schumacher, S., &#38; Zentgraf, T. (2026). Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. <i>ACS Photonics</i>, <i>13</i>, 2128–2133. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>","ieee":"H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, and T. Zentgraf, “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling,” <i>ACS Photonics</i>, vol. 13, pp. 2128–2133, 2026, doi: <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>.","chicago":"Wetter, Helene, Jan Wingenbach, Falk Rehberg, Wenlong Gao, Stefan Schumacher, and Thomas Zentgraf. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” <i>ACS Photonics</i> 13 (2026): 2128–33. <a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">https://doi.org/10.1021/acsphotonics.5c02865</a>.","short":"H. Wetter, J. Wingenbach, F. Rehberg, W. Gao, S. Schumacher, T. Zentgraf, ACS Photonics 13 (2026) 2128–2133.","mla":"Wetter, Helene, et al. “Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling.” <i>ACS Photonics</i>, vol. 13, American Chemical Society (ACS), 2026, pp. 2128–33, doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>.","ama":"Wetter H, Wingenbach J, Rehberg F, Gao W, Schumacher S, Zentgraf T. Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling. <i>ACS Photonics</i>. 2026;13:2128-2133. doi:<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>","bibtex":"@article{Wetter_Wingenbach_Rehberg_Gao_Schumacher_Zentgraf_2026, title={Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling}, volume={13}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.5c02865\">10.1021/acsphotonics.5c02865</a>}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Wetter, Helene and Wingenbach, Jan and Rehberg, Falk and Gao, Wenlong and Schumacher, Stefan and Zentgraf, Thomas}, year={2026}, pages={2128–2133} }"},"external_id":{"arxiv":["2512.14452"]},"status":"public","user_id":"30525","volume":13,"page":"2128-2133","_id":"65316","publisher":"American Chemical Society (ACS)","abstract":[{"lang":"eng","text":"Metasurfaces are powerful tools for manipulating light using small structures on the nanoscale. In most metasurfaces, near-field couplings are treated as being unfavorable perturbations. Here, we experimentally investigate a structure consisting of sinusoidally modulated silicon waveguides where near-field coupling of local resonances leads to negative coupling, i.e., a negative coupling constant. This gives rise to wave-vector-dependent eigenstates of elliptical, linear, and circular polarizations. In particular, fully circular polarization states are not only present at a single point in momentum space (k-space) but also along a line. This circular polarization line, as well as a linear polarization line, emanates from a polarization degeneracy at the Dirac point. We experimentally validate the existence of these eigenstates and demonstrate the energy-, polarization-, and wave vector dependence of this metasurface as well as its sensitivity to fabrication tolerances. By tuning the incident k-vector, certain polarization-energy eigenstates are strongly reflected, allowing for uses in angle-tunable polarization filters and light sources."}],"publication":"ACS Photonics","type":"journal_article","keyword":["metasurface","waveguides","Dirac point","polarization","negative coupling"],"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"date_created":"2026-04-02T07:25:30Z","date_updated":"2026-04-20T05:09:57Z","publication_status":"published","intvolume":"        13","year":"2026","title":"Polarization- and Wave-Vector Selective Optical Metasurface with Near-Field Coupling","publication_identifier":{"issn":["2330-4022","2330-4022"]},"author":[{"last_name":"Wetter","first_name":"Helene","full_name":"Wetter, Helene"},{"id":"69187","last_name":"Wingenbach","first_name":"Jan","full_name":"Wingenbach, Jan"},{"last_name":"Rehberg","first_name":"Falk","full_name":"Rehberg, Falk"},{"full_name":"Gao, Wenlong","first_name":"Wenlong","last_name":"Gao"},{"orcid":"0000-0003-4042-4951","first_name":"Stefan","last_name":"Schumacher","full_name":"Schumacher, Stefan","id":"27271"},{"full_name":"Zentgraf, Thomas","last_name":"Zentgraf","first_name":"Thomas","orcid":"0000-0002-8662-1101","id":"30525"}],"doi":"10.1021/acsphotonics.5c02865","main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsphotonics.5c02865"}],"language":[{"iso":"eng"}]},{"ddc":["620"],"doi":"https://doi.org/10.1016/j.euromechsol.2026.106137","user_id":"57708","language":[{"iso":"eng"}],"_id":"65458","has_accepted_license":"1","date_updated":"2026-04-20T11:28:43Z","author":[{"id":"57708","full_name":"Hamdoun, Ayoub","first_name":"Ayoub","last_name":"Hamdoun"},{"last_name":"Mahnken","first_name":"Rolf","full_name":"Mahnken, Rolf","id":"335"},{"full_name":"Ostwald, Richard","first_name":"Richard","orcid":"0000-0003-2147-8444","last_name":"Ostwald","id":"106876"}],"title":"A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework","status":"public","year":"2026","oa":"1","department":[{"_id":"9"},{"_id":"952"},{"_id":"321"}],"type":"journal_article","date_created":"2026-04-18T07:19:21Z","file":[{"date_created":"2026-04-18T07:19:12Z","creator":"ahamdoun","content_type":"application/pdf","file_id":"65459","date_updated":"2026-04-18T07:19:12Z","relation":"main_file","access_level":"open_access","file_size":3153415,"file_name":"1-s2.0-S0997753826001233-main.pdf"}],"citation":{"short":"A. Hamdoun, R. Mahnken, R. Ostwald, European Journal of Mechanics / A Solids (2026).","ama":"Hamdoun A, Mahnken R, Ostwald R. A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework. <i>European Journal of Mechanics / A Solids</i>. Published online 2026. doi:<a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>","chicago":"Hamdoun, Ayoub, Rolf Mahnken, and Richard Ostwald. “A Gradient-Damage Model for Amorphous Glassy Polymers: Consistent Formulation of Viscoplasticity and Damage Evolution in a Micromorphic Framework.” <i>European Journal of Mechanics / A Solids</i>, 2026. <a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>.","bibtex":"@article{Hamdoun_Mahnken_Ostwald_2026, title={A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework}, DOI={<a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>}, journal={European Journal of Mechanics / A Solids}, author={Hamdoun, Ayoub and Mahnken, Rolf and Ostwald, Richard}, year={2026} }","mla":"Hamdoun, Ayoub, et al. “A Gradient-Damage Model for Amorphous Glassy Polymers: Consistent Formulation of Viscoplasticity and Damage Evolution in a Micromorphic Framework.” <i>European Journal of Mechanics / A Solids</i>, 2026, doi:<a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>.","apa":"Hamdoun, A., Mahnken, R., &#38; Ostwald, R. (2026). A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework. <i>European Journal of Mechanics / A Solids</i>. <a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>","ieee":"A. Hamdoun, R. Mahnken, and R. Ostwald, “A gradient-damage model for amorphous glassy polymers: Consistent formulation of viscoplasticity and damage evolution in a micromorphic framework,” <i>European Journal of Mechanics / A Solids</i>, 2026, doi: <a href=\"https://doi.org/10.1016/j.euromechsol.2026.106137\">https://doi.org/10.1016/j.euromechsol.2026.106137</a>."},"publication":"European Journal of Mechanics / A Solids","file_date_updated":"2026-04-18T07:19:12Z"},{"language":[{"iso":"eng"}],"_id":"61922","page":"247-253","user_id":"71541","author":[{"full_name":"Buhrman, Harry","first_name":"Harry","last_name":"Buhrman"},{"full_name":"Gharibian, Sevag","first_name":"Sevag","last_name":"Gharibian","orcid":"0000-0002-9992-3379","id":"71541"},{"last_name":"Landau","first_name":"Zeph","full_name":"Landau, Zeph"},{"full_name":"Gall, François Le","first_name":"François Le","last_name":"Gall"},{"first_name":"Norbert","last_name":"Schuch","full_name":"Schuch, Norbert"},{"last_name":"Tamaki","first_name":"Suguru","full_name":"Tamaki, Suguru"}],"title":"A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT","status":"public","year":"2026","date_updated":"2026-04-20T13:53:03Z","publication_status":"inpress","date_created":"2025-10-22T09:33:22Z","external_id":{"arxiv":["2510.18164"]},"department":[{"_id":"7"},{"_id":"623"}],"type":"conference","citation":{"apa":"Buhrman, H., Gharibian, S., Landau, Z., Gall, F. L., Schuch, N., &#38; Tamaki, S. (n.d.). A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT. <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, 247–253.","ieee":"H. Buhrman, S. Gharibian, Z. Landau, F. L. Gall, N. Schuch, and S. Tamaki, “A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT,” in <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, pp. 247–253.","short":"H. Buhrman, S. Gharibian, Z. Landau, F.L. Gall, N. Schuch, S. Tamaki, in: SIAM Symposium on Simplicity in Algorithms (SOSA), n.d., pp. 247–253.","chicago":"Buhrman, Harry, Sevag Gharibian, Zeph Landau, François Le Gall, Norbert Schuch, and Suguru Tamaki. “A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT.” In <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, 247–53, n.d.","mla":"Buhrman, Harry, et al. “A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT.” <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>, pp. 247–53.","ama":"Buhrman H, Gharibian S, Landau Z, Gall FL, Schuch N, Tamaki S. A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT. In: <i>SIAM Symposium on Simplicity in Algorithms (SOSA)</i>. ; :247-253.","bibtex":"@inproceedings{Buhrman_Gharibian_Landau_Gall_Schuch_Tamaki, title={A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT}, booktitle={SIAM Symposium on Simplicity in Algorithms (SOSA)}, author={Buhrman, Harry and Gharibian, Sevag and Landau, Zeph and Gall, François Le and Schuch, Norbert and Tamaki, Suguru}, pages={247–253} }"},"publication":"SIAM Symposium on Simplicity in Algorithms (SOSA)","abstract":[{"text":"We present an extremely simple polynomial-space exponential-time\r\n$(1-\\varepsilon)$-approximation algorithm for MAX-k-SAT that is (slightly)\r\nfaster than the previous known polynomial-space $(1-\\varepsilon)$-approximation\r\nalgorithms by Hirsch (Discrete Applied Mathematics, 2003) and Escoffier,\r\nPaschos and Tourniaire (Theoretical Computer Science, 2014). Our algorithm\r\nrepeatedly samples an assignment uniformly at random until finding an\r\nassignment that satisfies a large enough fraction of clauses. Surprisingly, we\r\ncan show the efficiency of this simpler approach by proving that in any\r\ninstance of MAX-k-SAT (or more generally any instance of MAXCSP), an\r\nexponential number of assignments satisfy a fraction of clauses close to the\r\noptimal value.","lang":"eng"}]},{"date_created":"2026-04-22T08:03:46Z","department":[{"_id":"150"},{"_id":"624"},{"_id":"9"}],"type":"mastersthesis","citation":{"ieee":"F. Hüwel, <i>Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)</i>. 2026.","apa":"Hüwel, F. (2026). <i>Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)</i>.","short":"F. Hüwel, Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit), 2026.","chicago":"Hüwel, Fabian. <i>Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit)</i>, 2026.","mla":"Hüwel, Fabian. <i>Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit)</i>. 2026.","bibtex":"@book{Hüwel_2026, title={Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)}, author={Hüwel, Fabian}, year={2026} }","ama":"Hüwel F. <i>Untersuchung Der Einflussfaktoren Auf Die Recyclingfähigkeit von Flammgeschütztem Polyamid 12-Pulver Beim Selektiven Lasersintern (Studienarbeit)</i>.; 2026."},"supervisor":[{"id":"464","full_name":"Schmid, Hans-Joachim","last_name":"Schmid","first_name":"Hans-Joachim","orcid":"000-0001-8590-1921"},{"id":"3959","full_name":"Jesinghausen, Steffen","last_name":"Jesinghausen","orcid":"https://orcid.org/0000-0003-2611-5298","first_name":"Steffen"},{"orcid":"0009-0004-8412-3645 ","last_name":"Neitzel","first_name":"Fabian","full_name":"Neitzel, Fabian","id":"72307"}],"language":[{"iso":"eng"}],"_id":"65482","user_id":"72307","author":[{"last_name":"Hüwel","first_name":"Fabian","full_name":"Hüwel, Fabian"}],"status":"public","year":"2026","title":"Untersuchung der Einflussfaktoren auf die Recyclingfähigkeit von flammgeschütztem Polyamid 12-Pulver beim selektiven Lasersintern (Studienarbeit)","date_updated":"2026-04-22T08:04:02Z"}]
