--- _id: '60568' article_number: '122776' author: - first_name: Adriana full_name: Bocchini, Adriana id: '58349' last_name: Bocchini orcid: 0000-0002-2134-3075 - first_name: S. full_name: Kollmann, S. last_name: Kollmann - first_name: Uwe full_name: Gerstmann, Uwe id: '171' last_name: Gerstmann orcid: 0000-0002-4476-223X - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier citation: ama: Bocchini A, Kollmann S, Gerstmann U, Schmidt WG, Grundmeier G. Phosphonic acid adsorption on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si23.svg" display="inline" id="d1e564"><mml:mi>α</mml:mi></mml:math>-Bi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si24.svg" display="inline" id="d1e569"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>O<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si25.svg" display="inline" id="d1e577"><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> surfaces. Surface Science. 2025;760. doi:10.1016/j.susc.2025.122776 apa: Bocchini, A., Kollmann, S., Gerstmann, U., Schmidt, W. G., & Grundmeier, G. (2025). Phosphonic acid adsorption on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si23.svg" display="inline" id="d1e564"><mml:mi>α</mml:mi></mml:math>-Bi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si24.svg" display="inline" id="d1e569"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>O<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si25.svg" display="inline" id="d1e577"><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> surfaces. Surface Science, 760, Article 122776. https://doi.org/10.1016/j.susc.2025.122776 bibtex: '@article{Bocchini_Kollmann_Gerstmann_Schmidt_Grundmeier_2025, title={Phosphonic acid adsorption on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si23.svg" display="inline" id="d1e564"><mml:mi>α</mml:mi></mml:math>-Bi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si24.svg" display="inline" id="d1e569"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>O<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si25.svg" display="inline" id="d1e577"><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> surfaces}, volume={760}, DOI={10.1016/j.susc.2025.122776}, number={122776}, journal={Surface Science}, publisher={Elsevier BV}, author={Bocchini, Adriana and Kollmann, S. and Gerstmann, Uwe and Schmidt, Wolf Gero and Grundmeier, Guido}, year={2025} }' chicago: Bocchini, Adriana, S. Kollmann, Uwe Gerstmann, Wolf Gero Schmidt, and Guido Grundmeier. “Phosphonic Acid Adsorption on <mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML" Altimg="si23.Svg" Display="inline" Id="d1e564"><mml:Mi>α</Mml:Mi></Mml:Math>-Bi<mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML" Altimg="si24.Svg" Display="inline" Id="d1e569"><mml:Msub><mml:Mrow/><mml:Mrow><mml:Mn>2</Mml:Mn></Mml:Mrow></Mml:Msub></Mml:Math>O<mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML" Altimg="si25.Svg" Display="inline" Id="d1e577"><mml:Msub><mml:Mrow/><mml:Mrow><mml:Mn>3</Mml:Mn></Mml:Mrow></Mml:Msub></Mml:Math> Surfaces.” Surface Science 760 (2025). https://doi.org/10.1016/j.susc.2025.122776. ieee: 'A. Bocchini, S. Kollmann, U. Gerstmann, W. G. Schmidt, and G. Grundmeier, “Phosphonic acid adsorption on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si23.svg" display="inline" id="d1e564"><mml:mi>α</mml:mi></mml:math>-Bi<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si24.svg" display="inline" id="d1e569"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>O<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si25.svg" display="inline" id="d1e577"><mml:msub><mml:mrow/><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> surfaces,” Surface Science, vol. 760, Art. no. 122776, 2025, doi: 10.1016/j.susc.2025.122776.' mla: Bocchini, Adriana, et al. “Phosphonic Acid Adsorption on <mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML" Altimg="si23.Svg" Display="inline" Id="d1e564"><mml:Mi>α</Mml:Mi></Mml:Math>-Bi<mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML" Altimg="si24.Svg" Display="inline" Id="d1e569"><mml:Msub><mml:Mrow/><mml:Mrow><mml:Mn>2</Mml:Mn></Mml:Mrow></Mml:Msub></Mml:Math>O<mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML" Altimg="si25.Svg" Display="inline" Id="d1e577"><mml:Msub><mml:Mrow/><mml:Mrow><mml:Mn>3</Mml:Mn></Mml:Mrow></Mml:Msub></Mml:Math> Surfaces.” Surface Science, vol. 760, 122776, Elsevier BV, 2025, doi:10.1016/j.susc.2025.122776. short: A. Bocchini, S. Kollmann, U. Gerstmann, W.G. Schmidt, G. Grundmeier, Surface Science 760 (2025). date_created: 2025-07-09T09:23:04Z date_updated: 2025-12-05T13:34:10Z department: - _id: '15' - _id: '2' - _id: '230' - _id: '295' - _id: '790' - _id: '302' - _id: '429' - _id: '35' - _id: '170' - _id: '27' doi: 10.1016/j.susc.2025.122776 intvolume: ' 760' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1016/j.susc.2025.122776 oa: '1' project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' - _id: '53' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '54' name: 'TRR 142 - A: TRR 142 - Project Area A' - _id: '168' name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)' - _id: '166' name: 'TRR 142 - A11: TRR 142 - Subproject A11' publication: Surface Science publication_identifier: issn: - 0039-6028 publication_status: published publisher: Elsevier BV status: public title: Phosphonic acid adsorption on α-Bi2O3 surfaces type: journal_article user_id: '16199' volume: 760 year: '2025' ... --- _id: '61353' abstract: - lang: eng text: "Abstract\r\n Muonic hydrogen is an exotic atom where a muon instead of an electron is bound to a proton. The comparably high mass of the muon (≈ 207 · me\r\n \ ) has two important effects, (i) the reduced mass of the system becomes more important, and (ii) the muon is localized much closer to the nucleus. Thus, muonic hydrogen is not only excellently suitable for evaluating highly precise quantum electrodynamic (QED) calculations, but may also be used for assessing new approaches including finite nuclear size (FNS) effects to evaluate the proton structure and improve calculation schemes for the hyperfine splittings of many-particle systems, as e.g. to be implemented in density functional theory (DFT) software packages. Here, starting from Dirac’s equation we calculate the relativistic hyperfine splitting of the ground state and several excited states of muonic hydrogen analytically for different charge and magnetization models. The FNS related hyperfine shifts are compared with the differences between QED calculations and experimental measurements. This comparison also allows to unravel the role of the reduced mass, which is on one hand crucial in case of muonic atoms, but on the other hand is by no means well defined in relativistic quantum mechanics." article_number: '012001' author: - first_name: Katharina L. full_name: Franzke, Katharina L. last_name: Franzke - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Uwe full_name: Gerstmann, Uwe id: '171' last_name: Gerstmann orcid: 0000-0002-4476-223X citation: ama: 'Franzke KL, Schmidt WG, Gerstmann U. Finite-size and relativistic effects onto hyperfine interaction of muonic hydrogen. Journal of Physics: Conference Series. 2025;3027(1). doi:10.1088/1742-6596/3027/1/012001' apa: 'Franzke, K. L., Schmidt, W. G., & Gerstmann, U. (2025). Finite-size and relativistic effects onto hyperfine interaction of muonic hydrogen. Journal of Physics: Conference Series, 3027(1), Article 012001. https://doi.org/10.1088/1742-6596/3027/1/012001' bibtex: '@article{Franzke_Schmidt_Gerstmann_2025, title={Finite-size and relativistic effects onto hyperfine interaction of muonic hydrogen}, volume={3027}, DOI={10.1088/1742-6596/3027/1/012001}, number={1012001}, journal={Journal of Physics: Conference Series}, publisher={IOP Publishing}, author={Franzke, Katharina L. and Schmidt, Wolf Gero and Gerstmann, Uwe}, year={2025} }' chicago: 'Franzke, Katharina L., Wolf Gero Schmidt, and Uwe Gerstmann. “Finite-Size and Relativistic Effects onto Hyperfine Interaction of Muonic Hydrogen.” Journal of Physics: Conference Series 3027, no. 1 (2025). https://doi.org/10.1088/1742-6596/3027/1/012001.' ieee: 'K. L. Franzke, W. G. Schmidt, and U. Gerstmann, “Finite-size and relativistic effects onto hyperfine interaction of muonic hydrogen,” Journal of Physics: Conference Series, vol. 3027, no. 1, Art. no. 012001, 2025, doi: 10.1088/1742-6596/3027/1/012001.' mla: 'Franzke, Katharina L., et al. “Finite-Size and Relativistic Effects onto Hyperfine Interaction of Muonic Hydrogen.” Journal of Physics: Conference Series, vol. 3027, no. 1, 012001, IOP Publishing, 2025, doi:10.1088/1742-6596/3027/1/012001.' short: 'K.L. Franzke, W.G. Schmidt, U. Gerstmann, Journal of Physics: Conference Series 3027 (2025).' date_created: 2025-09-18T11:17:05Z date_updated: 2025-12-05T13:32:45Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '35' - _id: '230' - _id: '429' - _id: '27' - _id: '790' doi: 10.1088/1742-6596/3027/1/012001 intvolume: ' 3027' issue: '1' language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '54' name: TRR 142 - Project Area A - _id: '166' name: TRR 142 - Subproject A11 publication: 'Journal of Physics: Conference Series' publication_identifier: issn: - 1742-6588 - 1742-6596 publication_status: published publisher: IOP Publishing status: public title: Finite-size and relativistic effects onto hyperfine interaction of muonic hydrogen type: journal_article user_id: '16199' volume: 3027 year: '2025' ... --- _id: '61352' author: - first_name: Vasanthan full_name: Devaraj, Vasanthan id: '103814' last_name: Devaraj - first_name: Isaac Azahel full_name: Ruiz Alvarado, Isaac Azahel id: '79462' last_name: Ruiz Alvarado orcid: 0000-0002-4710-1170 - first_name: Jongmin full_name: Lee, Jongmin last_name: Lee - first_name: Jin-Woo full_name: Oh, Jin-Woo last_name: Oh - first_name: Uwe full_name: Gerstmann, Uwe id: '171' last_name: Gerstmann orcid: 0000-0002-4476-223X - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 citation: ama: 'Devaraj V, Ruiz Alvarado IA, Lee J, et al. Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly. In: 2025 Conference on Lasers and Electro-Optics Europe &amp;Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE; 2025. doi:10.1109/cleo/europe-eqec65582.2025.11109762' apa: Devaraj, V., Ruiz Alvarado, I. A., Lee, J., Oh, J.-W., Gerstmann, U., Schmidt, W. G., & Zentgraf, T. (2025). Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly. 2025 Conference on Lasers and Electro-Optics Europe &amp;Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC). https://doi.org/10.1109/cleo/europe-eqec65582.2025.11109762 bibtex: '@inproceedings{Devaraj_Ruiz Alvarado_Lee_Oh_Gerstmann_Schmidt_Zentgraf_2025, title={Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly}, DOI={10.1109/cleo/europe-eqec65582.2025.11109762}, booktitle={2025 Conference on Lasers and Electro-Optics Europe &amp;amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)}, publisher={IEEE}, author={Devaraj, Vasanthan and Ruiz Alvarado, Isaac Azahel and Lee, Jongmin and Oh, Jin-Woo and Gerstmann, Uwe and Schmidt, Wolf Gero and Zentgraf, Thomas}, year={2025} }' chicago: Devaraj, Vasanthan, Isaac Azahel Ruiz Alvarado, Jongmin Lee, Jin-Woo Oh, Uwe Gerstmann, Wolf Gero Schmidt, and Thomas Zentgraf. “Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly.” In 2025 Conference on Lasers and Electro-Optics Europe &amp;Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2025. https://doi.org/10.1109/cleo/europe-eqec65582.2025.11109762. ieee: 'V. Devaraj et al., “Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly,” 2025, doi: 10.1109/cleo/europe-eqec65582.2025.11109762.' mla: Devaraj, Vasanthan, et al. “Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly.” 2025 Conference on Lasers and Electro-Optics Europe &amp;Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC), IEEE, 2025, doi:10.1109/cleo/europe-eqec65582.2025.11109762. short: 'V. Devaraj, I.A. Ruiz Alvarado, J. Lee, J.-W. Oh, U. Gerstmann, W.G. Schmidt, T. Zentgraf, in: 2025 Conference on Lasers and Electro-Optics Europe &amp;Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC), IEEE, 2025.' date_created: 2025-09-18T11:09:30Z date_updated: 2025-12-05T13:32:18Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '289' - _id: '35' - _id: '230' - _id: '790' doi: 10.1109/cleo/europe-eqec65582.2025.11109762 language: - iso: eng publication: 2025 Conference on Lasers and Electro-Optics Europe &amp; European Quantum Electronics Conference (CLEO/Europe-EQEC) publication_status: published publisher: IEEE status: public title: Dynamic and Reversible Plasmonic Nanogaps From Isolated Dimer Nanoparticles via Self-Assembly type: conference user_id: '16199' year: '2025' ... --- _id: '62866' abstract: - lang: eng text: "Abstract\r\n \r\n The development of efficient and broadly applicable n‐doping strategies for organic semiconductors (OSCs) is crucial for advancing the performance of various organic electronic devices. Here, a novel nucleophilic‐attack n‐doping mechanism is unveiled that achieves exceptionally high conductivity in doped OSC films and demonstrates broad applicability across OSCs. The remarkable efficacy of n‐Butyl lithium (n‐BuLi) is highlighted in n‐doping C\r\n 60\r\n \ and PC\r\n 61\r\n \ BM, achieving a conductivity of 1.27 S cm\r\n −1\r\n \ and 2.57 S cm\r\n −1\r\n \ , respectively, which are among the highest reported values for these materials. The investigation reveals that the n‐BuLi anion interacts with electron‐deficient units in OSCs, generating a carbanion that facilitates efficient electron transfer for n‐doping. This mechanism is further validated across diverse fullerenes, polymeric, and small molecule OSCs, and is extendable to other high‐performance dopants such as tert‐Butyllithium (tert‐BuLi) and sodium ethoxide (NaOEt). Device studies show that n‐BuLi‐doped C\r\n 60\r\n \ enables substantially improved diode rectification, attributed to greater junction built‐in potential. These findings establish a unified chemical‐bonding‐based n‐doping paradigm, complementing existing electrophilic‐attack p‐doping concepts, and pave the way for achieving efficient doping of OSCs for advanced organic electronic applications.\r\n " article_number: e20487 author: - first_name: Huan full_name: Wei, Huan last_name: Wei - first_name: Tong full_name: Wu, Tong last_name: Wu - first_name: Chuanding full_name: Dong, Chuanding last_name: Dong - first_name: Chen full_name: Chen, Chen last_name: Chen - first_name: Zhenqi full_name: Gong, Zhenqi last_name: Gong - first_name: Jiangnan full_name: Xia, Jiangnan last_name: Xia - first_name: Chengyuan full_name: Peng, Chengyuan last_name: Peng - first_name: Jiaqi full_name: Ding, Jiaqi last_name: Ding - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Wenpei full_name: Shi, Wenpei last_name: Shi - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 - first_name: Xue full_name: Zhang, Xue last_name: Zhang - first_name: Yugang full_name: Bai, Yugang last_name: Bai - first_name: Lang full_name: Jiang, Lang last_name: Jiang - first_name: Lei full_name: Liao, Lei last_name: Liao - first_name: Thuc‐Quyen full_name: Nguyen, Thuc‐Quyen last_name: Nguyen - first_name: Yuanyuan full_name: Hu, Yuanyuan last_name: Hu citation: ama: Wei H, Wu T, Dong C, et al. Efficient n‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism. Advanced Science. Published online 2025. doi:10.1002/advs.202520487 apa: Wei, H., Wu, T., Dong, C., Chen, C., Gong, Z., Xia, J., Peng, C., Ding, J., Zhang, Y., Shi, W., Schumacher, S., Zhang, X., Bai, Y., Jiang, L., Liao, L., Nguyen, T., & Hu, Y. (2025). Efficient n‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism. Advanced Science, Article e20487. https://doi.org/10.1002/advs.202520487 bibtex: '@article{Wei_Wu_Dong_Chen_Gong_Xia_Peng_Ding_Zhang_Shi_et al._2025, title={Efficient n‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism}, DOI={10.1002/advs.202520487}, number={e20487}, journal={Advanced Science}, publisher={Wiley}, author={Wei, Huan and Wu, Tong and Dong, Chuanding and Chen, Chen and Gong, Zhenqi and Xia, Jiangnan and Peng, Chengyuan and Ding, Jiaqi and Zhang, Yu and Shi, Wenpei and et al.}, year={2025} }' chicago: Wei, Huan, Tong Wu, Chuanding Dong, Chen Chen, Zhenqi Gong, Jiangnan Xia, Chengyuan Peng, et al. “Efficient N‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism.” Advanced Science, 2025. https://doi.org/10.1002/advs.202520487. ieee: 'H. Wei et al., “Efficient n‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism,” Advanced Science, Art. no. e20487, 2025, doi: 10.1002/advs.202520487.' mla: Wei, Huan, et al. “Efficient N‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism.” Advanced Science, e20487, Wiley, 2025, doi:10.1002/advs.202520487. short: H. Wei, T. Wu, C. Dong, C. Chen, Z. Gong, J. Xia, C. Peng, J. Ding, Y. Zhang, W. Shi, S. Schumacher, X. Zhang, Y. Bai, L. Jiang, L. Liao, T. Nguyen, Y. Hu, Advanced Science (2025). date_created: 2025-12-04T12:30:39Z date_updated: 2025-12-05T13:40:48Z department: - _id: '15' - _id: '170' - _id: '297' - _id: '705' - _id: '35' - _id: '230' doi: 10.1002/advs.202520487 language: - iso: eng publication: Advanced Science publication_identifier: issn: - 2198-3844 - 2198-3844 publication_status: published publisher: Wiley status: public title: Efficient n‐Doping of Organic Semiconductors via a Broadly Applicable Nucleophilic‐Attack Mechanism type: journal_article user_id: '16199' year: '2025' ... --- _id: '60992' abstract: - lang: eng text: Non-Hermitian systems hosting exceptional points (EPs) exhibit enhanced sensitivity and unconventional mode dynamics. Going beyond isolated EPs, here we report on the existence of exceptional rings (ERs) in planar optical resonators with specific form of circular dichroism and TE-TM splitting. Such exceptional rings possess intriguing topologies as discussed earlier for condensed matter systems, but they remain virtually unexplored in presence of nonlinearity, for which our photonic platform is ideal. We find that when Kerr-type nonlinearity (or saturable gain) is introduced, the linear ER splits into two concentric ERs, with the larger-radius ring being a ring of third-order EPs. Transitioning from linear to nonlinear regime, we present a rigorous analysis of spectral topology and report enhanced and adjustable perturbation response in the nonlinear regime. Whereas certain features are specific to our system, the results on non-Hermitian spectral topology and nonlinearity-enhanced perturbation response are generic and equally relevant to a broad class of other nonlinear non-Hermitian systems, providing a universal framework for engineering ERs and EPs in nonlinear non-Hermitian systems. author: - first_name: Jan full_name: Wingenbach, Jan id: '69187' last_name: Wingenbach - first_name: 'Laura ' full_name: 'Ares Santos, Laura ' last_name: Ares Santos - first_name: Xuekai full_name: Ma, Xuekai id: '59416' last_name: Ma - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 citation: ama: Wingenbach J, Ares Santos L, Ma X, Sperling J, Schumacher S. Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities. Arxiv. Published online 2025. doi:10.48550/ARXIV.2507.07099 apa: Wingenbach, J., Ares Santos, L., Ma, X., Sperling, J., & Schumacher, S. (2025). Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities. Arxiv. https://doi.org/10.48550/ARXIV.2507.07099 bibtex: '@article{Wingenbach_Ares Santos_Ma_Sperling_Schumacher_2025, title={Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities}, DOI={10.48550/ARXIV.2507.07099}, journal={Arxiv}, publisher={Arxiv}, author={Wingenbach, Jan and Ares Santos, Laura and Ma, Xuekai and Sperling, Jan and Schumacher, Stefan}, year={2025} }' chicago: Wingenbach, Jan, Laura Ares Santos, Xuekai Ma, Jan Sperling, and Stefan Schumacher. “Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities.” Arxiv, 2025. https://doi.org/10.48550/ARXIV.2507.07099. ieee: 'J. Wingenbach, L. Ares Santos, X. Ma, J. Sperling, and S. Schumacher, “Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities,” Arxiv, 2025, doi: 10.48550/ARXIV.2507.07099.' mla: Wingenbach, Jan, et al. “Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities.” Arxiv, Arxiv, 2025, doi:10.48550/ARXIV.2507.07099. short: J. Wingenbach, L. Ares Santos, X. Ma, J. Sperling, S. Schumacher, Arxiv (2025). date_created: 2025-08-25T11:15:22Z date_updated: 2025-12-05T13:55:48Z department: - _id: '15' - _id: '170' - _id: '297' - _id: '706' - _id: '705' - _id: '35' - _id: '230' - _id: '429' - _id: '27' doi: 10.48550/ARXIV.2507.07099 language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '174' name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse' - _id: '56' name: TRR 142 - Project Area C publication: Arxiv publisher: Arxiv status: public title: Sensitivity and Topology of Exceptional Rings in Nonlinear Non-Hermitian Planar Optical Microcavities type: journal_article user_id: '16199' year: '2025' ... --- _id: '62926' abstract: - lang: eng text: "Abstract\r\n \r\n Negatively charged boron vacancies () in hexagonal boron nitride (hBN) are emerging as promising solid‐state spin qubits due to their optical accessibility, structural simplicity, and compatibility with photonic platforms. However, quantifying the density of such defects in thin hBN flakes has remained elusive, limiting progress in device integration and reproducibility. Here, an all‐optical method is presented to quantify \ defect density in hBN by correlating Raman and photoluminescence (PL) signatures with irradiation fluence. Two defect‐induced Raman modes, D1 and D2, are identified and assigned them to vibrational modes of using polarization‐resolved Raman measurements and density functional theory (DFT) calculations. By adapting a numerical model originally developed for graphene, an empirical relationship linking Raman (D1,\r\n \ E\r\n 2g\r\n \ ) and PL intensities is established to absolute defect densities. This method is universally applicable across various irradiation types and uniquely suited for thin flakes, where conventional techniques fail. The approach enables accurate, direct, and non‐destructive quantification of spin defect densities down to 10\r\n 15\r\n  defects/cm\r\n \ 3\r\n , offering a powerful tool for optimizing and benchmarking hBN for quantum optical applications.\r\n \ " article_number: e17851 author: - first_name: Atanu full_name: Patra, Atanu last_name: Patra - first_name: Paul full_name: Konrad, Paul last_name: Konrad - first_name: Andreas full_name: Sperlich, Andreas last_name: Sperlich - first_name: Timur full_name: Biktagirov, Timur id: '65612' last_name: Biktagirov - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Lesley full_name: Spencer, Lesley last_name: Spencer - first_name: Igor full_name: Aharonovich, Igor last_name: Aharonovich - first_name: Sven full_name: Höfling, Sven last_name: Höfling - first_name: Vladimir full_name: Dyakonov, Vladimir last_name: Dyakonov citation: ama: Patra A, Konrad P, Sperlich A, et al. Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis. Advanced Functional Materials. Published online 2025. doi:10.1002/adfm.202517851 apa: Patra, A., Konrad, P., Sperlich, A., Biktagirov, T., Schmidt, W. G., Spencer, L., Aharonovich, I., Höfling, S., & Dyakonov, V. (2025). Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis. Advanced Functional Materials, Article e17851. https://doi.org/10.1002/adfm.202517851 bibtex: '@article{Patra_Konrad_Sperlich_Biktagirov_Schmidt_Spencer_Aharonovich_Höfling_Dyakonov_2025, title={Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis}, DOI={10.1002/adfm.202517851}, number={e17851}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Patra, Atanu and Konrad, Paul and Sperlich, Andreas and Biktagirov, Timur and Schmidt, Wolf Gero and Spencer, Lesley and Aharonovich, Igor and Höfling, Sven and Dyakonov, Vladimir}, year={2025} }' chicago: Patra, Atanu, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, and Vladimir Dyakonov. “Quantifying Spin Defect Density in HBN via Raman and Photoluminescence Analysis.” Advanced Functional Materials, 2025. https://doi.org/10.1002/adfm.202517851. ieee: 'A. Patra et al., “Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis,” Advanced Functional Materials, Art. no. e17851, 2025, doi: 10.1002/adfm.202517851.' mla: Patra, Atanu, et al. “Quantifying Spin Defect Density in HBN via Raman and Photoluminescence Analysis.” Advanced Functional Materials, e17851, Wiley, 2025, doi:10.1002/adfm.202517851. short: A. Patra, P. Konrad, A. Sperlich, T. Biktagirov, W.G. Schmidt, L. Spencer, I. Aharonovich, S. Höfling, V. Dyakonov, Advanced Functional Materials (2025). date_created: 2025-12-05T14:15:35Z date_updated: 2025-12-05T14:18:27Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '35' - _id: '230' - _id: '27' doi: 10.1002/adfm.202517851 language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Advanced Functional Materials publication_identifier: issn: - 1616-301X - 1616-3028 publication_status: published publisher: Wiley status: public title: Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis type: journal_article user_id: '16199' year: '2025' ... --- _id: '62980' abstract: - lang: eng text: We introduce a new classification of multimode states with a fixed number of photons. This classification is based on the factorizability of homogeneous multivariate polynomials and is invariant under unitary transformations. The classes physically correspond to field excitations in terms of single and multiple photons, each of which is in an arbitrary irreducible superposition of quantized modes. We further show how the transitions between classes are rendered possible by photon addition, photon subtraction, and photon-projection nonlinearities. We explicitly put forward a design for a multilayer interferometer in which the states for different classes can be generated with state-of-the-art experimental techniques. Limitations of the proposed designs are analyzed using the introduced classification, providing a benchmark for the robustness of certain states and classes. article_number: '033062' author: - first_name: Denis A. full_name: Kopylov, Denis A. last_name: Kopylov - first_name: Christian full_name: Offen, Christian id: '85279' last_name: Offen orcid: 0000-0002-5940-8057 - first_name: Laura full_name: Ares, Laura last_name: Ares - first_name: Boris Edgar full_name: Wembe Moafo, Boris Edgar id: '95394' last_name: Wembe Moafo - first_name: Sina full_name: Ober-Blöbaum, Sina id: '16494' last_name: Ober-Blöbaum - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Polina R. full_name: Sharapova, Polina R. id: '60286' last_name: Sharapova - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 citation: ama: Kopylov DA, Offen C, Ares L, et al. Multiphoton, multimode state classification for nonlinear optical circuits. Physical Review Research. 2025;7(3). doi:10.1103/sv6z-v1gk apa: Kopylov, D. A., Offen, C., Ares, L., Wembe Moafo, B. E., Ober-Blöbaum, S., Meier, T., Sharapova, P. R., & Sperling, J. (2025). Multiphoton, multimode state classification for nonlinear optical circuits. Physical Review Research, 7(3), Article 033062. https://doi.org/10.1103/sv6z-v1gk bibtex: '@article{Kopylov_Offen_Ares_Wembe Moafo_Ober-Blöbaum_Meier_Sharapova_Sperling_2025, title={Multiphoton, multimode state classification for nonlinear optical circuits}, volume={7}, DOI={10.1103/sv6z-v1gk}, number={3033062}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Kopylov, Denis A. and Offen, Christian and Ares, Laura and Wembe Moafo, Boris Edgar and Ober-Blöbaum, Sina and Meier, Torsten and Sharapova, Polina R. and Sperling, Jan}, year={2025} }' chicago: Kopylov, Denis A., Christian Offen, Laura Ares, Boris Edgar Wembe Moafo, Sina Ober-Blöbaum, Torsten Meier, Polina R. Sharapova, and Jan Sperling. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits.” Physical Review Research 7, no. 3 (2025). https://doi.org/10.1103/sv6z-v1gk. ieee: 'D. A. Kopylov et al., “Multiphoton, multimode state classification for nonlinear optical circuits,” Physical Review Research, vol. 7, no. 3, Art. no. 033062, 2025, doi: 10.1103/sv6z-v1gk.' mla: Kopylov, Denis A., et al. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits.” Physical Review Research, vol. 7, no. 3, 033062, American Physical Society (APS), 2025, doi:10.1103/sv6z-v1gk. short: D.A. Kopylov, C. Offen, L. Ares, B.E. Wembe Moafo, S. Ober-Blöbaum, T. Meier, P.R. Sharapova, J. Sperling, Physical Review Research 7 (2025). date_created: 2025-12-09T09:08:39Z date_updated: 2025-12-09T09:10:01Z department: - _id: '15' - _id: '569' - _id: '170' - _id: '293' - _id: '706' - _id: '636' - _id: '35' - _id: '230' - _id: '429' - _id: '623' doi: 10.1103/sv6z-v1gk intvolume: ' 7' issue: '3' language: - iso: eng project: - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '56' name: TRR 142 - Project Area C - _id: '174' name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse' - _id: '266' name: 'PhoQC: Photonisches Quantencomputing' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society (APS) status: public title: Multiphoton, multimode state classification for nonlinear optical circuits type: journal_article user_id: '16199' volume: 7 year: '2025' ... --- _id: '62979' abstract: - lang: eng text: We introduce a new classification of multimode states with a fixed number of photons. This classification is based on the factorizability of homogeneous multivariate polynomials and is invariant under unitary transformations. The classes physically correspond to field excitations in terms of single and multiple photons, each of which being in an arbitrary irreducible superposition of quantized modes. We further show how the transitions between classes are rendered possible by photon addition, photon subtraction, and photon-projection nonlinearities. We explicitly put forward a design for a multilayer interferometer in which the states for different classes can be generated with state-of-the-art experimental techniques. Limitations of the proposed designs are analyzed using the introduced classification, providing a benchmark for the robustness of certain states and classes. author: - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Polina R. full_name: Sharapova, Polina R. id: '60286' last_name: Sharapova - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 - first_name: Sina full_name: Ober-Blöbaum, Sina id: '16494' last_name: Ober-Blöbaum - first_name: Boris Edgar full_name: Wembe Moafo, Boris Edgar id: '95394' last_name: Wembe Moafo - first_name: Christian full_name: Offen, Christian id: '85279' last_name: Offen orcid: 0000-0002-5940-8057 citation: ama: Meier T, Sharapova PR, Sperling J, Ober-Blöbaum S, Wembe Moafo BE, Offen C. Multiphoton, multimode state classification for nonlinear optical circuits. Published online 2025. apa: Meier, T., Sharapova, P. R., Sperling, J., Ober-Blöbaum, S., Wembe Moafo, B. E., & Offen, C. (2025). Multiphoton, multimode state classification for nonlinear optical circuits. bibtex: '@article{Meier_Sharapova_Sperling_Ober-Blöbaum_Wembe Moafo_Offen_2025, title={Multiphoton, multimode state classification for nonlinear optical circuits}, author={Meier, Torsten and Sharapova, Polina R. and Sperling, Jan and Ober-Blöbaum, Sina and Wembe Moafo, Boris Edgar and Offen, Christian}, year={2025} }' chicago: Meier, Torsten, Polina R. Sharapova, Jan Sperling, Sina Ober-Blöbaum, Boris Edgar Wembe Moafo, and Christian Offen. “Multiphoton, Multimode State Classification for Nonlinear Optical Circuits,” 2025. ieee: T. Meier, P. R. Sharapova, J. Sperling, S. Ober-Blöbaum, B. E. Wembe Moafo, and C. Offen, “Multiphoton, multimode state classification for nonlinear optical circuits.” 2025. mla: Meier, Torsten, et al. Multiphoton, Multimode State Classification for Nonlinear Optical Circuits. 2025. short: T. Meier, P.R. Sharapova, J. Sperling, S. Ober-Blöbaum, B.E. Wembe Moafo, C. Offen, (2025). date_created: 2025-12-09T08:59:27Z date_updated: 2025-12-09T09:10:23Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '706' - _id: '636' - _id: '230' - _id: '623' - _id: '429' - _id: '35' language: - iso: eng project: - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '56' name: TRR 142 - Project Area C - _id: '174' name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse' - _id: '266' name: 'PhoQC: Photonisches Quantencomputing' status: public title: Multiphoton, multimode state classification for nonlinear optical circuits type: preprint user_id: '16199' year: '2025' ... --- _id: '63021' abstract: - lang: eng text: Bell measurements, entailing the projection onto one of the Bell states, play a key role in quantum information and communication, where the outcome of a variety of protocols crucially depends on the success probability of such measurements. Although in the case of qubit systems, Bell measurements can be implemented using only linear optical components, the same result is no longer true for qudits, where at least the use of ancillary photons is required. In order to circumvent this limitation, one possibility is to introduce nonlinear effects. In this work, we adopt the latter approach and propose a scalable Bell measurement scheme for high-dimensional states, exploiting multiple squeezer devices applied to a linear optical circuit for discriminating the different Bell states. Our approach does not require ancillary photons, is not limited by the dimension of the quantum states, and is experimentally scalable, thus paving the way toward the realization of an effective high-dimensional Bell measurement. article_number: '023038' author: - first_name: Luca full_name: Bianchi, Luca last_name: Bianchi - first_name: Carlo full_name: Marconi, Carlo last_name: Marconi - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 - first_name: Davide full_name: Bacco, Davide last_name: Bacco citation: ama: Bianchi L, Marconi C, Sperling J, Bacco D. Predetection squeezing as a resource for high-dimensional Bell-state measurements. Physical Review Research. 2025;7(2). doi:10.1103/physrevresearch.7.023038 apa: Bianchi, L., Marconi, C., Sperling, J., & Bacco, D. (2025). Predetection squeezing as a resource for high-dimensional Bell-state measurements. Physical Review Research, 7(2), Article 023038. https://doi.org/10.1103/physrevresearch.7.023038 bibtex: '@article{Bianchi_Marconi_Sperling_Bacco_2025, title={Predetection squeezing as a resource for high-dimensional Bell-state measurements}, volume={7}, DOI={10.1103/physrevresearch.7.023038}, number={2023038}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Bianchi, Luca and Marconi, Carlo and Sperling, Jan and Bacco, Davide}, year={2025} }' chicago: Bianchi, Luca, Carlo Marconi, Jan Sperling, and Davide Bacco. “Predetection Squeezing as a Resource for High-Dimensional Bell-State Measurements.” Physical Review Research 7, no. 2 (2025). https://doi.org/10.1103/physrevresearch.7.023038. ieee: 'L. Bianchi, C. Marconi, J. Sperling, and D. Bacco, “Predetection squeezing as a resource for high-dimensional Bell-state measurements,” Physical Review Research, vol. 7, no. 2, Art. no. 023038, 2025, doi: 10.1103/physrevresearch.7.023038.' mla: Bianchi, Luca, et al. “Predetection Squeezing as a Resource for High-Dimensional Bell-State Measurements.” Physical Review Research, vol. 7, no. 2, 023038, American Physical Society (APS), 2025, doi:10.1103/physrevresearch.7.023038. short: L. Bianchi, C. Marconi, J. Sperling, D. Bacco, Physical Review Research 7 (2025). date_created: 2025-12-10T13:34:53Z date_updated: 2025-12-10T13:36:11Z department: - _id: '623' - _id: '15' - _id: '170' - _id: '706' - _id: '429' doi: 10.1103/physrevresearch.7.023038 intvolume: ' 7' issue: '2' language: - iso: eng publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society (APS) status: public title: Predetection squeezing as a resource for high-dimensional Bell-state measurements type: journal_article user_id: '75127' volume: 7 year: '2025' ... --- _id: '63160' article_number: '245304' author: - first_name: Hendrik full_name: Rose, Hendrik id: '55958' last_name: Rose orcid: 0000-0002-3079-5428 - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 citation: ama: 'Rose H, Schumacher S, Meier T. Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons. Physical Review B. 2025;112(24). doi:10.1103/528f-7smh' apa: 'Rose, H., Schumacher, S., & Meier, T. (2025). Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons. Physical Review B, 112(24), Article 245304. https://doi.org/10.1103/528f-7smh' bibtex: '@article{Rose_Schumacher_Meier_2025, title={Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons}, volume={112}, DOI={10.1103/528f-7smh}, number={24245304}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Rose, Hendrik and Schumacher, Stefan and Meier, Torsten}, year={2025} }' chicago: 'Rose, Hendrik, Stefan Schumacher, and Torsten Meier. “Microscopic Approach to the Quantized Light-Matter Interaction in Semiconductor Nanostructures: Complex Coupled Dynamics of Excitons, Biexcitons, and Photons.” Physical Review B 112, no. 24 (2025). https://doi.org/10.1103/528f-7smh.' ieee: 'H. Rose, S. Schumacher, and T. Meier, “Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons,” Physical Review B, vol. 112, no. 24, Art. no. 245304, 2025, doi: 10.1103/528f-7smh.' mla: 'Rose, Hendrik, et al. “Microscopic Approach to the Quantized Light-Matter Interaction in Semiconductor Nanostructures: Complex Coupled Dynamics of Excitons, Biexcitons, and Photons.” Physical Review B, vol. 112, no. 24, 245304, American Physical Society (APS), 2025, doi:10.1103/528f-7smh.' short: H. Rose, S. Schumacher, T. Meier, Physical Review B 112 (2025). date_created: 2025-12-16T15:50:42Z date_updated: 2025-12-16T15:52:55Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '297' - _id: '623' - _id: '429' - _id: '230' - _id: '35' - _id: '27' doi: 10.1103/528f-7smh intvolume: ' 112' issue: '24' language: - iso: eng project: - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '54' name: TRR 142 - Project Area A - _id: '59' name: 'TRR 142; TP A02: Nichtlineare Spektroskopie von Halbleiter-Nanostrukturen mit Quantenlicht' - _id: '445' name: Hochleistungsrechner Noctua in Paderborn - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '266' name: 'PhoQC: Photonisches Quantencomputing' publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published publisher: American Physical Society (APS) status: public title: 'Microscopic approach to the quantized light-matter interaction in semiconductor nanostructures: Complex coupled dynamics of excitons, biexcitons, and photons' type: journal_article user_id: '16199' volume: 112 year: '2025' ... --- _id: '63534' abstract: - lang: eng text: Boson sampling is a key candidate for demonstrating quantum advantage and has already yielded significant advances in quantum simulation, machine learning, and graph theory. In this work, a unification and extension of distinct forms of boson sampling is developed. The devised protocol merges discrete-variable scattershot boson sampling with continuous-variable Gaussian boson sampling. Therefore, it is rendered possible to harness the complexity of more interesting states, such as squeezed photons, in advanced sampling protocols. A generating function formalism is developed for the joint description of multiphoton and multimode light undergoing Gaussian transformations. The resulting analytical tools enable one to explore interfaces of different photonic quantum-information-processing platforms. A numerical simulation of unified sampling is carried out, benchmarking its performance, complexity, and scalability. Entanglement is characterized to exemplify the generation of quantum correlations from the nonlinear interactions of a unified sampler. article_number: L042068 author: - first_name: Luca full_name: Bianchi, Luca last_name: Bianchi - first_name: Carlo full_name: Marconi, Carlo last_name: Marconi - first_name: Laura full_name: Ares, Laura last_name: Ares - first_name: Davide full_name: Bacco, Davide last_name: Bacco - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 citation: ama: Bianchi L, Marconi C, Ares L, Bacco D, Sperling J. Unified boson sampling. Physical Review Research. 2025;7(4). doi:10.1103/8hy1-m5gg apa: Bianchi, L., Marconi, C., Ares, L., Bacco, D., & Sperling, J. (2025). Unified boson sampling. Physical Review Research, 7(4), Article L042068. https://doi.org/10.1103/8hy1-m5gg bibtex: '@article{Bianchi_Marconi_Ares_Bacco_Sperling_2025, title={Unified boson sampling}, volume={7}, DOI={10.1103/8hy1-m5gg}, number={4L042068}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Bianchi, Luca and Marconi, Carlo and Ares, Laura and Bacco, Davide and Sperling, Jan}, year={2025} }' chicago: Bianchi, Luca, Carlo Marconi, Laura Ares, Davide Bacco, and Jan Sperling. “Unified Boson Sampling.” Physical Review Research 7, no. 4 (2025). https://doi.org/10.1103/8hy1-m5gg. ieee: 'L. Bianchi, C. Marconi, L. Ares, D. Bacco, and J. Sperling, “Unified boson sampling,” Physical Review Research, vol. 7, no. 4, Art. no. L042068, 2025, doi: 10.1103/8hy1-m5gg.' mla: Bianchi, Luca, et al. “Unified Boson Sampling.” Physical Review Research, vol. 7, no. 4, L042068, American Physical Society (APS), 2025, doi:10.1103/8hy1-m5gg. short: L. Bianchi, C. Marconi, L. Ares, D. Bacco, J. Sperling, Physical Review Research 7 (2025). date_created: 2026-01-09T08:02:57Z date_updated: 2026-01-09T08:03:38Z department: - _id: '623' - _id: '15' - _id: '170' - _id: '706' - _id: '429' doi: 10.1103/8hy1-m5gg intvolume: ' 7' issue: '4' language: - iso: eng publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society (APS) status: public title: Unified boson sampling type: journal_article user_id: '75127' volume: 7 year: '2025' ... --- _id: '63562' abstract: - lang: eng text: 'Entangled two-mode Gaussian states constitute an important building block for continuous variable quantum computing and communication protocols. In this work, we theoretically study two-mode bipartite states, which are extracted from multimode light generated via type-II parametric downconversion (PDC) in lossy waveguides. For these states, we demonstrate that the squeezing quantifies entanglement and we construct a measurement basis, which results in the maximal bipartite entanglement. We illustrate our findings by numerically solving the spatial master equation for PDC in a Markovian environment. The optimal measurement modes are compared with two widely used broadband bases: the Mercer–Wolf basis (the first-order coherence basis) and the Williamson–Euler basis.' article_number: '046116' author: - first_name: Denis full_name: Kopylov, Denis id: '98502' last_name: Kopylov - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Polina R. full_name: Sharapova, Polina R. id: '60286' last_name: Sharapova citation: ama: Kopylov D, Meier T, Sharapova PR. Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides. APL Quantum. 2025;2(4). doi:10.1063/5.0293116 apa: Kopylov, D., Meier, T., & Sharapova, P. R. (2025). Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides. APL Quantum, 2(4), Article 046116. https://doi.org/10.1063/5.0293116 bibtex: '@article{Kopylov_Meier_Sharapova_2025, title={Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides}, volume={2}, DOI={10.1063/5.0293116}, number={4046116}, journal={APL Quantum}, publisher={AIP Publishing}, author={Kopylov, Denis and Meier, Torsten and Sharapova, Polina R.}, year={2025} }' chicago: Kopylov, Denis, Torsten Meier, and Polina R. Sharapova. “Bipartite Entanglement Extracted from Multimode Squeezed Light Generated in Lossy Waveguides.” APL Quantum 2, no. 4 (2025). https://doi.org/10.1063/5.0293116. ieee: 'D. Kopylov, T. Meier, and P. R. Sharapova, “Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides,” APL Quantum, vol. 2, no. 4, Art. no. 046116, 2025, doi: 10.1063/5.0293116.' mla: Kopylov, Denis, et al. “Bipartite Entanglement Extracted from Multimode Squeezed Light Generated in Lossy Waveguides.” APL Quantum, vol. 2, no. 4, 046116, AIP Publishing, 2025, doi:10.1063/5.0293116. short: D. Kopylov, T. Meier, P.R. Sharapova, APL Quantum 2 (2025). date_created: 2026-01-12T13:18:51Z date_updated: 2026-01-12T13:23:36Z department: - _id: '15' - _id: '569' - _id: '170' - _id: '293' - _id: '429' - _id: '230' - _id: '623' - _id: '35' doi: 10.1063/5.0293116 intvolume: ' 2' issue: '4' language: - iso: eng project: - _id: '53' name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '56' name: TRR 142 - Project Area C - _id: '174' name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse' - _id: '266' name: 'PhoQC: Photonisches Quantencomputing' publication: APL Quantum publication_identifier: issn: - 2835-0103 publication_status: published publisher: AIP Publishing status: public title: Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides type: journal_article user_id: '16199' volume: 2 year: '2025' ... --- _id: '60566' article_number: '074402' author: - first_name: Adriana full_name: Bocchini, Adriana id: '58349' last_name: Bocchini orcid: 0000-0002-2134-3075 - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 - first_name: Laura full_name: Bollmers, Laura id: '61375' last_name: Bollmers - first_name: Sebastian full_name: Lengeling, Sebastian id: '44373' last_name: Lengeling - first_name: Philipp full_name: Mues, Philipp id: '49772' last_name: Mues orcid: 0000-0003-0643-7636 - first_name: Laura full_name: Padberg, Laura id: '40300' last_name: Padberg - first_name: Uwe full_name: Gerstmann, Uwe id: '171' last_name: Gerstmann orcid: 0000-0002-4476-223X - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn - first_name: Christof full_name: Eigner, Christof id: '13244' last_name: Eigner orcid: https://orcid.org/0000-0002-5693-3083 - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 citation: ama: 'Bocchini A, Rüsing M, Bollmers L, et al. Mg dopants in lithium niobate: Defect models and impact on domain inversion. Physical Review Materials. 2025;9(7). doi:10.1103/5wz1-bjyr' apa: 'Bocchini, A., Rüsing, M., Bollmers, L., Lengeling, S., Mues, P., Padberg, L., Gerstmann, U., Silberhorn, C., Eigner, C., & Schmidt, W. G. (2025). Mg dopants in lithium niobate: Defect models and impact on domain inversion. Physical Review Materials, 9(7), Article 074402. https://doi.org/10.1103/5wz1-bjyr' bibtex: '@article{Bocchini_Rüsing_Bollmers_Lengeling_Mues_Padberg_Gerstmann_Silberhorn_Eigner_Schmidt_2025, title={Mg dopants in lithium niobate: Defect models and impact on domain inversion}, volume={9}, DOI={10.1103/5wz1-bjyr}, number={7074402}, journal={Physical Review Materials}, publisher={American Physical Society (APS)}, author={Bocchini, Adriana and Rüsing, Michael and Bollmers, Laura and Lengeling, Sebastian and Mues, Philipp and Padberg, Laura and Gerstmann, Uwe and Silberhorn, Christine and Eigner, Christof and Schmidt, Wolf Gero}, year={2025} }' chicago: 'Bocchini, Adriana, Michael Rüsing, Laura Bollmers, Sebastian Lengeling, Philipp Mues, Laura Padberg, Uwe Gerstmann, Christine Silberhorn, Christof Eigner, and Wolf Gero Schmidt. “Mg Dopants in Lithium Niobate: Defect Models and Impact on Domain Inversion.” Physical Review Materials 9, no. 7 (2025). https://doi.org/10.1103/5wz1-bjyr.' ieee: 'A. Bocchini et al., “Mg dopants in lithium niobate: Defect models and impact on domain inversion,” Physical Review Materials, vol. 9, no. 7, Art. no. 074402, 2025, doi: 10.1103/5wz1-bjyr.' mla: 'Bocchini, Adriana, et al. “Mg Dopants in Lithium Niobate: Defect Models and Impact on Domain Inversion.” Physical Review Materials, vol. 9, no. 7, 074402, American Physical Society (APS), 2025, doi:10.1103/5wz1-bjyr.' short: A. Bocchini, M. Rüsing, L. Bollmers, S. Lengeling, P. Mues, L. Padberg, U. Gerstmann, C. Silberhorn, C. Eigner, W.G. Schmidt, Physical Review Materials 9 (2025). date_created: 2025-07-09T09:13:24Z date_updated: 2026-03-17T17:50:06Z ddc: - '530' department: - _id: '15' - _id: '623' - _id: '295' - _id: '790' - _id: '288' - _id: '230' - _id: '429' - _id: '35' - _id: '170' - _id: '169' - _id: '27' doi: 10.1103/5wz1-bjyr file: - access_level: open_access content_type: application/pdf creator: adrianab date_created: 2025-07-09T09:18:45Z date_updated: 2025-07-10T06:43:34Z file_id: '60567' file_name: Mg_dopants_LN_PRM.pdf file_size: 4175120 relation: main_file file_date_updated: 2025-07-10T06:43:34Z has_accepted_license: '1' intvolume: ' 9' issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://link.aps.org/doi/10.1103/5wz1-bjyr oa: '1' project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' - _id: '53' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '54' name: 'TRR 142 - A: TRR 142 - Project Area A' - _id: '168' name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)' - _id: '166' name: 'TRR 142 - A11: TRR 142 - Subproject A11' publication: Physical Review Materials publication_identifier: issn: - 2475-9953 publication_status: published publisher: American Physical Society (APS) status: public title: 'Mg dopants in lithium niobate: Defect models and impact on domain inversion' type: journal_article user_id: '22501' volume: 9 year: '2025' ... --- _id: '50829' article_number: L012017 author: - first_name: Nils full_name: Heinisch, Nils id: '90283' last_name: Heinisch - first_name: Nikolas full_name: Köcher, Nikolas id: '79191' last_name: Köcher - first_name: David full_name: Bauch, David id: '44172' last_name: Bauch - first_name: Stefan full_name: Schumacher, Stefan id: '27271' last_name: Schumacher orcid: 0000-0003-4042-4951 citation: ama: 'Heinisch N, Köcher N, Bauch D, Schumacher S. Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs. Physical Review Research. 2024;6(1). doi:10.1103/PhysRevResearch.6.L012017' apa: 'Heinisch, N., Köcher, N., Bauch, D., & Schumacher, S. (2024). Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs. Physical Review Research, 6(1), Article L012017. https://doi.org/10.1103/PhysRevResearch.6.L012017' bibtex: '@article{Heinisch_Köcher_Bauch_Schumacher_2024, title={Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs}, volume={6}, DOI={10.1103/PhysRevResearch.6.L012017}, number={1L012017}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Heinisch, Nils and Köcher, Nikolas and Bauch, David and Schumacher, Stefan}, year={2024} }' chicago: 'Heinisch, Nils, Nikolas Köcher, David Bauch, and Stefan Schumacher. “Swing-up Dynamics in Quantum Emitter Cavity Systems: Near Ideal Single Photons and Entangled Photon Pairs.” Physical Review Research 6, no. 1 (2024). https://doi.org/10.1103/PhysRevResearch.6.L012017.' ieee: 'N. Heinisch, N. Köcher, D. Bauch, and S. Schumacher, “Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs,” Physical Review Research, vol. 6, no. 1, Art. no. L012017, 2024, doi: 10.1103/PhysRevResearch.6.L012017.' mla: 'Heinisch, Nils, et al. “Swing-up Dynamics in Quantum Emitter Cavity Systems: Near Ideal Single Photons and Entangled Photon Pairs.” Physical Review Research, vol. 6, no. 1, L012017, American Physical Society (APS), 2024, doi:10.1103/PhysRevResearch.6.L012017.' short: N. Heinisch, N. Köcher, D. Bauch, S. Schumacher, Physical Review Research 6 (2024). date_created: 2024-01-24T15:17:37Z date_updated: 2024-01-24T16:07:57Z department: - _id: '230' - _id: '623' - _id: '15' - _id: '170' - _id: '297' doi: 10.1103/PhysRevResearch.6.L012017 intvolume: ' 6' issue: '1' language: - iso: eng project: - _id: '173' grant_number: '231447078' name: 'TRR 142 - C09: TRR 142 - Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen (C09*)' - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society (APS) status: public title: 'Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs' type: journal_article user_id: '90283' volume: 6 year: '2024' ... --- _id: '52723' abstract: - lang: eng text: Miller's rule is an empirical relation between the nonlinear and linear optical coefficients that applies to a large class of materials but has only been rigorously derived for the classical Lorentz model with a weak anharmonic perturbation. In this work, we extend the proof and present a detailed derivation of Miller's rule for an equivalent quantum-mechanical anharmonic oscillator. For this purpose, the classical concept of velocity-dependent damping inherent to the Lorentz model is replaced by an adiabatic switch-on of the external electric field, which allows a unified treatment of the classical and quantum-mechanical systems using identical potentials and fields. Although the dynamics of the resulting charge oscillations, and hence the induced polarizations, deviate due to the finite zero-point motion in the quantum-mechanical framework, we find that Miller's rule is nevertheless identical in both cases up to terms of first order in the anharmonicity. With a view to practical applications, especially in the context of ab initio calculations for the optical response where adiabatically switched-on fields are widely assumed, we demonstrate that a correct treatment of finite broadening parameters is essential to avoid spurious errors that may falsely suggest a violation of Miller's rule, and we illustrate this point by means of a numerical example. article_number: '095001' article_type: original author: - first_name: Maximilian Tim full_name: Meyer, Maximilian Tim id: '77895' last_name: Meyer orcid: 0009-0003-4899-0920 - first_name: Arno full_name: Schindlmayr, Arno id: '458' last_name: Schindlmayr orcid: 0000-0002-4855-071X citation: ama: 'Meyer MT, Schindlmayr A. Derivation of Miller’s rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator. Journal of Physics B: Atomic, Molecular and Optical Physics. 2024;57(9). doi:10.1088/1361-6455/ad369c' apa: 'Meyer, M. T., & Schindlmayr, A. (2024). Derivation of Miller’s rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator. Journal of Physics B: Atomic, Molecular and Optical Physics, 57(9), Article 095001. https://doi.org/10.1088/1361-6455/ad369c' bibtex: '@article{Meyer_Schindlmayr_2024, title={Derivation of Miller’s rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator}, volume={57}, DOI={10.1088/1361-6455/ad369c}, number={9095001}, journal={Journal of Physics B: Atomic, Molecular and Optical Physics}, publisher={IOP Publishing}, author={Meyer, Maximilian Tim and Schindlmayr, Arno}, year={2024} }' chicago: 'Meyer, Maximilian Tim, and Arno Schindlmayr. “Derivation of Miller’s Rule for the Nonlinear Optical Susceptibility of a Quantum Anharmonic Oscillator.” Journal of Physics B: Atomic, Molecular and Optical Physics 57, no. 9 (2024). https://doi.org/10.1088/1361-6455/ad369c.' ieee: 'M. T. Meyer and A. Schindlmayr, “Derivation of Miller’s rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator,” Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 57, no. 9, Art. no. 095001, 2024, doi: 10.1088/1361-6455/ad369c.' mla: 'Meyer, Maximilian Tim, and Arno Schindlmayr. “Derivation of Miller’s Rule for the Nonlinear Optical Susceptibility of a Quantum Anharmonic Oscillator.” Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 57, no. 9, 095001, IOP Publishing, 2024, doi:10.1088/1361-6455/ad369c.' short: 'M.T. Meyer, A. Schindlmayr, Journal of Physics B: Atomic, Molecular and Optical Physics 57 (2024).' date_created: 2024-03-22T08:44:39Z date_updated: 2024-04-13T11:20:56Z ddc: - '530' department: - _id: '296' - _id: '230' - _id: '15' - _id: '170' - _id: '35' doi: 10.1088/1361-6455/ad369c external_id: isi: - '001196678300001' file: - access_level: open_access content_type: application/pdf creator: schindlm date_created: 2024-04-04T09:24:22Z date_updated: 2024-04-04T09:24:22Z description: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) file_id: '53204' file_name: Meyer_2024_J._Phys._B _At._Mol._Opt._Phys._57_095001.pdf file_size: 358155 relation: main_file title: Derivation of Miller's rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator file_date_updated: 2024-04-04T09:24:22Z has_accepted_license: '1' intvolume: ' 57' isi: '1' issue: '9' language: - iso: eng oa: '1' publication: 'Journal of Physics B: Atomic, Molecular and Optical Physics' publication_identifier: eissn: - 1361-6455 issn: - 0953-4075 publication_status: published publisher: IOP Publishing quality_controlled: '1' status: public title: Derivation of Miller's rule for the nonlinear optical susceptibility of a quantum anharmonic oscillator type: journal_article user_id: '458' volume: 57 year: '2024' ... --- _id: '54093' article_number: '052408' article_type: original author: - first_name: Julien full_name: Pinske, Julien last_name: Pinske - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 citation: ama: Pinske J, Sperling J. Unbreakable and breakable quantum censorship. Physical Review A. 2024;109(5). doi:10.1103/physreva.109.052408 apa: Pinske, J., & Sperling, J. (2024). Unbreakable and breakable quantum censorship. Physical Review A, 109(5), Article 052408. https://doi.org/10.1103/physreva.109.052408 bibtex: '@article{Pinske_Sperling_2024, title={Unbreakable and breakable quantum censorship}, volume={109}, DOI={10.1103/physreva.109.052408}, number={5052408}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Pinske, Julien and Sperling, Jan}, year={2024} }' chicago: Pinske, Julien, and Jan Sperling. “Unbreakable and Breakable Quantum Censorship.” Physical Review A 109, no. 5 (2024). https://doi.org/10.1103/physreva.109.052408. ieee: 'J. Pinske and J. Sperling, “Unbreakable and breakable quantum censorship,” Physical Review A, vol. 109, no. 5, Art. no. 052408, 2024, doi: 10.1103/physreva.109.052408.' mla: Pinske, Julien, and Jan Sperling. “Unbreakable and Breakable Quantum Censorship.” Physical Review A, vol. 109, no. 5, 052408, American Physical Society (APS), 2024, doi:10.1103/physreva.109.052408. short: J. Pinske, J. Sperling, Physical Review A 109 (2024). date_created: 2024-05-08T13:31:37Z date_updated: 2024-05-08T14:19:33Z department: - _id: '623' - _id: '15' - _id: '170' - _id: '706' - _id: '429' doi: 10.1103/physreva.109.052408 intvolume: ' 109' issue: '5' language: - iso: eng publication: Physical Review A publication_identifier: issn: - 2469-9926 - 2469-9934 publication_status: published publisher: American Physical Society (APS) status: public title: Unbreakable and breakable quantum censorship type: journal_article user_id: '75127' volume: 109 year: '2024' ... --- _id: '55140' article_number: '012424' author: - first_name: Farha full_name: Yasmin, Farha last_name: Yasmin - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 citation: ama: 'Yasmin F, Sperling J. Entanglement-assisted quantum speedup: Beating local quantum speed limits. Physical Review A. 2024;110(1). doi:10.1103/physreva.110.012424' apa: 'Yasmin, F., & Sperling, J. (2024). Entanglement-assisted quantum speedup: Beating local quantum speed limits. Physical Review A, 110(1), Article 012424. https://doi.org/10.1103/physreva.110.012424' bibtex: '@article{Yasmin_Sperling_2024, title={Entanglement-assisted quantum speedup: Beating local quantum speed limits}, volume={110}, DOI={10.1103/physreva.110.012424}, number={1012424}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Yasmin, Farha and Sperling, Jan}, year={2024} }' chicago: 'Yasmin, Farha, and Jan Sperling. “Entanglement-Assisted Quantum Speedup: Beating Local Quantum Speed Limits.” Physical Review A 110, no. 1 (2024). https://doi.org/10.1103/physreva.110.012424.' ieee: 'F. Yasmin and J. Sperling, “Entanglement-assisted quantum speedup: Beating local quantum speed limits,” Physical Review A, vol. 110, no. 1, Art. no. 012424, 2024, doi: 10.1103/physreva.110.012424.' mla: 'Yasmin, Farha, and Jan Sperling. “Entanglement-Assisted Quantum Speedup: Beating Local Quantum Speed Limits.” Physical Review A, vol. 110, no. 1, 012424, American Physical Society (APS), 2024, doi:10.1103/physreva.110.012424.' short: F. Yasmin, J. Sperling, Physical Review A 110 (2024). date_created: 2024-07-09T10:27:33Z date_updated: 2024-07-09T10:29:29Z department: - _id: '623' - _id: '15' - _id: '170' - _id: '706' - _id: '429' doi: 10.1103/physreva.110.012424 intvolume: ' 110' issue: '1' language: - iso: eng project: - _id: '174' grant_number: '231447078' name: 'TRR 142 - C10: TRR 142 - Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse (C10*)' publication: Physical Review A publication_identifier: issn: - 2469-9926 - 2469-9934 publication_status: published publisher: American Physical Society (APS) status: public title: 'Entanglement-assisted quantum speedup: Beating local quantum speed limits' type: journal_article user_id: '75127' volume: 110 year: '2024' ... --- _id: '55173' article_number: '013705' author: - first_name: Christian full_name: Di Fidio, Christian last_name: Di Fidio - first_name: Laura full_name: Ares, Laura last_name: Ares - first_name: Jan full_name: Sperling, Jan id: '75127' last_name: Sperling orcid: 0000-0002-5844-3205 citation: ama: Di Fidio C, Ares L, Sperling J. Quantum walks and entanglement in cavity networks. Physical Review A. 2024;110(1). doi:10.1103/physreva.110.013705 apa: Di Fidio, C., Ares, L., & Sperling, J. (2024). Quantum walks and entanglement in cavity networks. Physical Review A, 110(1), Article 013705. https://doi.org/10.1103/physreva.110.013705 bibtex: '@article{Di Fidio_Ares_Sperling_2024, title={Quantum walks and entanglement in cavity networks}, volume={110}, DOI={10.1103/physreva.110.013705}, number={1013705}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Di Fidio, Christian and Ares, Laura and Sperling, Jan}, year={2024} }' chicago: Di Fidio, Christian, Laura Ares, and Jan Sperling. “Quantum Walks and Entanglement in Cavity Networks.” Physical Review A 110, no. 1 (2024). https://doi.org/10.1103/physreva.110.013705. ieee: 'C. Di Fidio, L. Ares, and J. Sperling, “Quantum walks and entanglement in cavity networks,” Physical Review A, vol. 110, no. 1, Art. no. 013705, 2024, doi: 10.1103/physreva.110.013705.' mla: Di Fidio, Christian, et al. “Quantum Walks and Entanglement in Cavity Networks.” Physical Review A, vol. 110, no. 1, 013705, American Physical Society (APS), 2024, doi:10.1103/physreva.110.013705. short: C. Di Fidio, L. Ares, J. Sperling, Physical Review A 110 (2024). date_created: 2024-07-11T07:20:08Z date_updated: 2024-07-11T07:21:12Z department: - _id: '623' - _id: '15' - _id: '170' - _id: '706' - _id: '429' doi: 10.1103/physreva.110.013705 intvolume: ' 110' issue: '1' language: - iso: eng project: - _id: '266' grant_number: PROFILNRW-2020-067 name: 'PhoQC: PhoQC: Photonisches Quantencomputing' publication: Physical Review A publication_identifier: issn: - 2469-9926 - 2469-9934 publication_status: published publisher: American Physical Society (APS) status: public title: Quantum walks and entanglement in cavity networks type: journal_article user_id: '75127' volume: 110 year: '2024' ... --- _id: '55264' abstract: - lang: eng text: Tunneling ionization is a crucial process in the interaction between strong laser fields and matter which initiates numerous nonlinear phenomena including high-order harmonic generation, photoelectron holography, etc. Both adiabatic and nonadiabatic tunneling ionization are well understood in atomic systems. However, the tunneling dynamics in solids, especially nonadiabatic tunneling, has not yet been fully understood. Here, we study the sub-cycle resolved strong-field tunneling dynamics in solids via a complex saddle-point method. We compare the instantaneous momentum at the moment of tunneling and the tunneling distances over a range of Keldysh parameters. Our results demonstrate that for nonadiabatic tunneling, tunneling ionization away from Γ point is possible. When this happens the electron has a nonzero initial velocity when it emerges in the conduction band. Moreover, consistent with atomic tunneling, a reduced tunneling distance as compared to the quasi-static case is found. Our results provide remarkable insight into the basic physics governing the sub-cycle electron tunneling dynamics with significant implications for understanding subsequent strong-field nonlinear phenomena in solids. article_number: '15862' author: - first_name: Shidong full_name: Yang, Shidong last_name: Yang - first_name: Xiwang full_name: Liu, Xiwang last_name: Liu - first_name: Hongdan full_name: Zhang, Hongdan last_name: Zhang - first_name: Xiaohong full_name: Song, Xiaohong last_name: Song - first_name: Ruixin full_name: Zuo, Ruixin last_name: Zuo - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Weifeng full_name: Yang, Weifeng last_name: Yang citation: ama: Yang S, Liu X, Zhang H, et al. Sub-cycle strong-field tunneling dynamics in solids. Optics Express. 2024;32(9). doi:10.1364/oe.521207 apa: Yang, S., Liu, X., Zhang, H., Song, X., Zuo, R., Meier, T., & Yang, W. (2024). Sub-cycle strong-field tunneling dynamics in solids. Optics Express, 32(9), Article 15862. https://doi.org/10.1364/oe.521207 bibtex: '@article{Yang_Liu_Zhang_Song_Zuo_Meier_Yang_2024, title={Sub-cycle strong-field tunneling dynamics in solids}, volume={32}, DOI={10.1364/oe.521207}, number={915862}, journal={Optics Express}, publisher={Optica Publishing Group}, author={Yang, Shidong and Liu, Xiwang and Zhang, Hongdan and Song, Xiaohong and Zuo, Ruixin and Meier, Torsten and Yang, Weifeng}, year={2024} }' chicago: Yang, Shidong, Xiwang Liu, Hongdan Zhang, Xiaohong Song, Ruixin Zuo, Torsten Meier, and Weifeng Yang. “Sub-Cycle Strong-Field Tunneling Dynamics in Solids.” Optics Express 32, no. 9 (2024). https://doi.org/10.1364/oe.521207. ieee: 'S. Yang et al., “Sub-cycle strong-field tunneling dynamics in solids,” Optics Express, vol. 32, no. 9, Art. no. 15862, 2024, doi: 10.1364/oe.521207.' mla: Yang, Shidong, et al. “Sub-Cycle Strong-Field Tunneling Dynamics in Solids.” Optics Express, vol. 32, no. 9, 15862, Optica Publishing Group, 2024, doi:10.1364/oe.521207. short: S. Yang, X. Liu, H. Zhang, X. Song, R. Zuo, T. Meier, W. Yang, Optics Express 32 (2024). date_created: 2024-07-15T09:25:30Z date_updated: 2024-07-15T09:29:23Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' - _id: '35' doi: 10.1364/oe.521207 intvolume: ' 32' issue: '9' language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: Optica Publishing Group status: public title: Sub-cycle strong-field tunneling dynamics in solids type: journal_article user_id: '16199' volume: 32 year: '2024' ... --- _id: '55267' article_number: '075301' author: - first_name: F. full_name: Schäfer, F. last_name: Schäfer - first_name: A. full_name: Trautmann, A. last_name: Trautmann - first_name: C. full_name: Ngo, C. last_name: Ngo - first_name: J. T. full_name: Steiner, J. T. last_name: Steiner - first_name: C. full_name: Fuchs, C. last_name: Fuchs - first_name: K. full_name: Volz, K. last_name: Volz - first_name: F. full_name: Dobener, F. last_name: Dobener - first_name: M. full_name: Stein, M. last_name: Stein - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: S. full_name: Chatterjee, S. last_name: Chatterjee citation: ama: Schäfer F, Trautmann A, Ngo C, et al. Optical Stark effect in type-II semiconductor heterostructures. Physical Review B. 2024;109(7). doi:10.1103/physrevb.109.075301 apa: Schäfer, F., Trautmann, A., Ngo, C., Steiner, J. T., Fuchs, C., Volz, K., Dobener, F., Stein, M., Meier, T., & Chatterjee, S. (2024). Optical Stark effect in type-II semiconductor heterostructures. Physical Review B, 109(7), Article 075301. https://doi.org/10.1103/physrevb.109.075301 bibtex: '@article{Schäfer_Trautmann_Ngo_Steiner_Fuchs_Volz_Dobener_Stein_Meier_Chatterjee_2024, title={Optical Stark effect in type-II semiconductor heterostructures}, volume={109}, DOI={10.1103/physrevb.109.075301}, number={7075301}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Schäfer, F. and Trautmann, A. and Ngo, C. and Steiner, J. T. and Fuchs, C. and Volz, K. and Dobener, F. and Stein, M. and Meier, Torsten and Chatterjee, S.}, year={2024} }' chicago: Schäfer, F., A. Trautmann, C. Ngo, J. T. Steiner, C. Fuchs, K. Volz, F. Dobener, M. Stein, Torsten Meier, and S. Chatterjee. “Optical Stark Effect in Type-II Semiconductor Heterostructures.” Physical Review B 109, no. 7 (2024). https://doi.org/10.1103/physrevb.109.075301. ieee: 'F. Schäfer et al., “Optical Stark effect in type-II semiconductor heterostructures,” Physical Review B, vol. 109, no. 7, Art. no. 075301, 2024, doi: 10.1103/physrevb.109.075301.' mla: Schäfer, F., et al. “Optical Stark Effect in Type-II Semiconductor Heterostructures.” Physical Review B, vol. 109, no. 7, 075301, American Physical Society (APS), 2024, doi:10.1103/physrevb.109.075301. short: F. Schäfer, A. Trautmann, C. Ngo, J.T. Steiner, C. Fuchs, K. Volz, F. Dobener, M. Stein, T. Meier, S. Chatterjee, Physical Review B 109 (2024). date_created: 2024-07-15T09:47:27Z date_updated: 2024-07-15T09:49:41Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '35' - _id: '230' - _id: '429' - _id: '27' doi: 10.1103/physrevb.109.075301 intvolume: ' 109' issue: '7' language: - iso: eng project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' - _id: '53' grant_number: '231447078' name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen' - _id: '165' grant_number: '231447078' name: 'TRR 142 - A10: TRR 142 - Nichtlinearitäten von atomar dünnen Übergangsmetall-Dichalkogeniden in starken Feldern (A10)' publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published publisher: American Physical Society (APS) status: public title: Optical Stark effect in type-II semiconductor heterostructures type: journal_article user_id: '16199' volume: 109 year: '2024' ...