[{"date_updated":"2025-12-18T16:07:35Z","publication_status":"published","intvolume":"        10","year":"2025","title":"Self-guided tomography of time-frequency qudits","publication_identifier":{"issn":["2058-9565"]},"author":[{"id":"88242","last_name":"Serino","first_name":"Laura Maria","full_name":"Serino, Laura Maria"},{"first_name":"Markus","last_name":"Rambach","full_name":"Rambach, Markus"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin","full_name":"Brecht, Benjamin","id":"27150"},{"full_name":"Romero, Jacquiline","first_name":"Jacquiline","last_name":"Romero"},{"full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine","id":"26263"}],"doi":"10.1088/2058-9565/adb0ea","article_number":"025024","language":[{"iso":"eng"}],"abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>High-dimensional time-frequency encodings have the potential to significantly advance quantum information science; however, practical applications require precise knowledge of the encoded quantum states, which becomes increasingly challenging for larger Hilbert spaces. Self-guided tomography (SGT) has emerged as a practical and scalable technique for this purpose in the spatial domain. Here, we apply SGT to estimate time-frequency states using a multi-output quantum pulse gate. We achieve fidelities of more than 99% for 3- and 5-dimensional states without the need for calibration or post-processing. We demonstrate the robustness of SGT against statistical and environmental noise, highlighting its efficacy in the photon-starved regime typical of quantum information applications.</jats:p>","lang":"eng"}],"issue":"2","publication":"Quantum Science and Technology","type":"journal_article","department":[{"_id":"15"},{"_id":"623"}],"date_created":"2025-12-18T16:07:11Z","status":"public","user_id":"27150","volume":10,"publisher":"IOP Publishing","_id":"63215","citation":{"mla":"Serino, Laura Maria, et al. “Self-Guided Tomography of Time-Frequency Qudits.” <i>Quantum Science and Technology</i>, vol. 10, no. 2, 025024, IOP Publishing, 2025, doi:<a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>.","ama":"Serino LM, Rambach M, Brecht B, Romero J, Silberhorn C. Self-guided tomography of time-frequency qudits. <i>Quantum Science and Technology</i>. 2025;10(2). doi:<a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>","bibtex":"@article{Serino_Rambach_Brecht_Romero_Silberhorn_2025, title={Self-guided tomography of time-frequency qudits}, volume={10}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>}, number={2025024}, journal={Quantum Science and Technology}, publisher={IOP Publishing}, author={Serino, Laura Maria and Rambach, Markus and Brecht, Benjamin and Romero, Jacquiline and Silberhorn, Christine}, year={2025} }","apa":"Serino, L. M., Rambach, M., Brecht, B., Romero, J., &#38; Silberhorn, C. (2025). Self-guided tomography of time-frequency qudits. <i>Quantum Science and Technology</i>, <i>10</i>(2), Article 025024. <a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">https://doi.org/10.1088/2058-9565/adb0ea</a>","ieee":"L. M. Serino, M. Rambach, B. Brecht, J. Romero, and C. Silberhorn, “Self-guided tomography of time-frequency qudits,” <i>Quantum Science and Technology</i>, vol. 10, no. 2, Art. no. 025024, 2025, doi: <a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">10.1088/2058-9565/adb0ea</a>.","chicago":"Serino, Laura Maria, Markus Rambach, Benjamin Brecht, Jacquiline Romero, and Christine Silberhorn. “Self-Guided Tomography of Time-Frequency Qudits.” <i>Quantum Science and Technology</i> 10, no. 2 (2025). <a href=\"https://doi.org/10.1088/2058-9565/adb0ea\">https://doi.org/10.1088/2058-9565/adb0ea</a>.","short":"L.M. Serino, M. Rambach, B. Brecht, J. Romero, C. Silberhorn, Quantum Science and Technology 10 (2025)."}},{"type":"journal_article","date_created":"2021-10-19T07:09:59Z","citation":{"ama":"Smirne A, Nitsche T, Egloff D, et al. Experimental control of the degree of non-classicality via quantum coherence. <i>Quantum Science and Technology</i>. Published online 2020. doi:<a href=\"https://doi.org/10.1088/2058-9565/aba039\">10.1088/2058-9565/aba039</a>","bibtex":"@article{Smirne_Nitsche_Egloff_Barkhofen_De_Dhand_Silberhorn_Huelga_Plenio_2020, title={Experimental control of the degree of non-classicality via quantum coherence}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/aba039\">10.1088/2058-9565/aba039</a>}, number={04LT01}, journal={Quantum Science and Technology}, author={Smirne, A and Nitsche, T and Egloff, D and Barkhofen, Sonja and De, S and Dhand, I and Silberhorn, Christine and Huelga, S F and Plenio, M B}, year={2020} }","mla":"Smirne, A., et al. “Experimental Control of the Degree of Non-Classicality via Quantum Coherence.” <i>Quantum Science and Technology</i>, 04LT01, 2020, doi:<a href=\"https://doi.org/10.1088/2058-9565/aba039\">10.1088/2058-9565/aba039</a>.","short":"A. Smirne, T. Nitsche, D. Egloff, S. Barkhofen, S. De, I. Dhand, C. Silberhorn, S.F. Huelga, M.B. Plenio, Quantum Science and Technology (2020).","chicago":"Smirne, A, T Nitsche, D Egloff, Sonja Barkhofen, S De, I Dhand, Christine Silberhorn, S F Huelga, and M B Plenio. “Experimental Control of the Degree of Non-Classicality via Quantum Coherence.” <i>Quantum Science and Technology</i>, 2020. <a href=\"https://doi.org/10.1088/2058-9565/aba039\">https://doi.org/10.1088/2058-9565/aba039</a>.","apa":"Smirne, A., Nitsche, T., Egloff, D., Barkhofen, S., De, S., Dhand, I., Silberhorn, C., Huelga, S. F., &#38; Plenio, M. B. (2020). Experimental control of the degree of non-classicality via quantum coherence. <i>Quantum Science and Technology</i>, Article 04LT01. <a href=\"https://doi.org/10.1088/2058-9565/aba039\">https://doi.org/10.1088/2058-9565/aba039</a>","ieee":"A. Smirne <i>et al.</i>, “Experimental control of the degree of non-classicality via quantum coherence,” <i>Quantum Science and Technology</i>, Art. no. 04LT01, 2020, doi: <a href=\"https://doi.org/10.1088/2058-9565/aba039\">10.1088/2058-9565/aba039</a>."},"publication":"Quantum Science and Technology","user_id":"48188","doi":"10.1088/2058-9565/aba039","language":[{"iso":"eng"}],"_id":"26507","article_number":"04LT01","publication_status":"published","date_updated":"2022-01-06T06:57:21Z","publication_identifier":{"issn":["2058-9565"]},"author":[{"first_name":"A","last_name":"Smirne","full_name":"Smirne, A"},{"full_name":"Nitsche, T","last_name":"Nitsche","first_name":"T"},{"full_name":"Egloff, D","first_name":"D","last_name":"Egloff"},{"last_name":"Barkhofen","first_name":"Sonja","full_name":"Barkhofen, Sonja","id":"48188"},{"full_name":"De, S","first_name":"S","last_name":"De"},{"full_name":"Dhand, I","first_name":"I","last_name":"Dhand"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"},{"first_name":"S F","last_name":"Huelga","full_name":"Huelga, S F"},{"last_name":"Plenio","first_name":"M B","full_name":"Plenio, M B"}],"year":"2020","status":"public","title":"Experimental control of the degree of non-classicality via quantum coherence"},{"status":"public","_id":"40381","publisher":"IOP Publishing","volume":5,"user_id":"16199","citation":{"bibtex":"@article{Ferreri_Ansari_Brecht_Silberhorn_Sharapova_2020, title={Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference}, volume={5}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/abb411\">10.1088/2058-9565/abb411</a>}, number={4045020}, journal={Quantum Science and Technology}, publisher={IOP Publishing}, author={Ferreri, A and Ansari, V and Brecht, Benjamin and Silberhorn, Christine and Sharapova, Polina R.}, year={2020} }","ama":"Ferreri A, Ansari V, Brecht B, Silberhorn C, Sharapova PR. Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference. <i>Quantum Science and Technology</i>. 2020;5(4). doi:<a href=\"https://doi.org/10.1088/2058-9565/abb411\">10.1088/2058-9565/abb411</a>","mla":"Ferreri, A., et al. “Spatial Entanglement and State Engineering via Four-Photon Hong–Ou–Mandel Interference.” <i>Quantum Science and Technology</i>, vol. 5, no. 4, 045020, IOP Publishing, 2020, doi:<a href=\"https://doi.org/10.1088/2058-9565/abb411\">10.1088/2058-9565/abb411</a>.","short":"A. Ferreri, V. Ansari, B. Brecht, C. Silberhorn, P.R. Sharapova, Quantum Science and Technology 5 (2020).","chicago":"Ferreri, A, V Ansari, Benjamin Brecht, Christine Silberhorn, and Polina R. Sharapova. “Spatial Entanglement and State Engineering via Four-Photon Hong–Ou–Mandel Interference.” <i>Quantum Science and Technology</i> 5, no. 4 (2020). <a href=\"https://doi.org/10.1088/2058-9565/abb411\">https://doi.org/10.1088/2058-9565/abb411</a>.","ieee":"A. Ferreri, V. Ansari, B. Brecht, C. Silberhorn, and P. R. Sharapova, “Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference,” <i>Quantum Science and Technology</i>, vol. 5, no. 4, Art. no. 045020, 2020, doi: <a href=\"https://doi.org/10.1088/2058-9565/abb411\">10.1088/2058-9565/abb411</a>.","apa":"Ferreri, A., Ansari, V., Brecht, B., Silberhorn, C., &#38; Sharapova, P. R. (2020). Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference. <i>Quantum Science and Technology</i>, <i>5</i>(4), Article 045020. <a href=\"https://doi.org/10.1088/2058-9565/abb411\">https://doi.org/10.1088/2058-9565/abb411</a>"},"project":[{"name":"TRR 142: TRR 142","_id":"53"},{"_id":"56","name":"TRR 142 - C: TRR 142 - Project Area C"},{"_id":"72","name":"TRR 142 - C2: TRR 142 - Subproject C2"}],"author":[{"full_name":"Ferreri, A","last_name":"Ferreri","first_name":"A"},{"first_name":"V","last_name":"Ansari","full_name":"Ansari, V"},{"full_name":"Brecht, Benjamin","first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150"},{"id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn"},{"id":"60286","full_name":"Sharapova, Polina R.","first_name":"Polina R.","last_name":"Sharapova"}],"publication_identifier":{"issn":["2058-9565"]},"year":"2020","title":"Spatial entanglement and state engineering via four-photon Hong–Ou–Mandel interference","intvolume":"         5","publication_status":"published","date_updated":"2025-12-16T11:27:56Z","language":[{"iso":"eng"}],"article_number":"045020","doi":"10.1088/2058-9565/abb411","issue":"4","publication":"Quantum Science and Technology","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>The phenomenon of entanglement is the basis of quantum information and quantum communication processes. Entangled systems with a large number of photons are of great interest at present because they provide a platform for streaming technologies based on photonics. In this paper we present a device which operates with four-photons and based on the Hong–Ou–Mandel interference. The presented device allows to maximize the degree of spatial entanglement and generate the highly entangled four-dimensional Bell states. Furthermore, the use of the interferometer in different regimes leads to fast interference fringes in the coincidence probability with period of oscillations twice smaller than the pump wavelength. We have a good agreement between theoretical simulations and experimental results.</jats:p>","lang":"eng"}],"date_created":"2023-01-26T14:06:23Z","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"288"},{"_id":"230"},{"_id":"429"},{"_id":"35"}],"type":"journal_article","keyword":["Electrical and Electronic Engineering","Physics and Astronomy (miscellaneous)","Materials Science (miscellaneous)","Atomic and Molecular Physics","and Optics"]},{"user_id":"75127","doi":"10.1088/2058-9565/ab3d56","_id":"26298","language":[{"iso":"eng"}],"article_number":"045008","publication_status":"published","date_updated":"2022-01-06T06:57:18Z","author":[{"full_name":"Rezai, Mohammad","first_name":"Mohammad","last_name":"Rezai"},{"last_name":"Sperling","orcid":"0000-0002-5844-3205","first_name":"Jan","full_name":"Sperling, Jan","id":"75127"},{"full_name":"Gerhardt, Ilja","last_name":"Gerhardt","first_name":"Ilja"}],"publication_identifier":{"issn":["2058-9565"]},"title":"What can single photons do what lasers cannot do?","year":"2019","status":"public","type":"journal_article","date_created":"2021-10-15T16:18:38Z","citation":{"mla":"Rezai, Mohammad, et al. “What Can Single Photons Do What Lasers Cannot Do?” <i>Quantum Science and Technology</i>, 045008, 2019, doi:<a href=\"https://doi.org/10.1088/2058-9565/ab3d56\">10.1088/2058-9565/ab3d56</a>.","ama":"Rezai M, Sperling J, Gerhardt I. What can single photons do what lasers cannot do? <i>Quantum Science and Technology</i>. Published online 2019. doi:<a href=\"https://doi.org/10.1088/2058-9565/ab3d56\">10.1088/2058-9565/ab3d56</a>","bibtex":"@article{Rezai_Sperling_Gerhardt_2019, title={What can single photons do what lasers cannot do?}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/ab3d56\">10.1088/2058-9565/ab3d56</a>}, number={045008}, journal={Quantum Science and Technology}, author={Rezai, Mohammad and Sperling, Jan and Gerhardt, Ilja}, year={2019} }","apa":"Rezai, M., Sperling, J., &#38; Gerhardt, I. (2019). What can single photons do what lasers cannot do? <i>Quantum Science and Technology</i>, Article 045008. <a href=\"https://doi.org/10.1088/2058-9565/ab3d56\">https://doi.org/10.1088/2058-9565/ab3d56</a>","ieee":"M. Rezai, J. Sperling, and I. Gerhardt, “What can single photons do what lasers cannot do?,” <i>Quantum Science and Technology</i>, Art. no. 045008, 2019, doi: <a href=\"https://doi.org/10.1088/2058-9565/ab3d56\">10.1088/2058-9565/ab3d56</a>.","short":"M. Rezai, J. Sperling, I. Gerhardt, Quantum Science and Technology (2019).","chicago":"Rezai, Mohammad, Jan Sperling, and Ilja Gerhardt. “What Can Single Photons Do What Lasers Cannot Do?” <i>Quantum Science and Technology</i>, 2019. <a href=\"https://doi.org/10.1088/2058-9565/ab3d56\">https://doi.org/10.1088/2058-9565/ab3d56</a>."},"publication":"Quantum Science and Technology"},{"type":"journal_article","date_created":"2021-10-12T08:11:02Z","citation":{"ama":"Luo KH, Herrmann H, Silberhorn C. Temporal correlations of spectrally narrowband photon pair sources. <i>Quantum Science and Technology</i>. Published online 2017. doi:<a href=\"https://doi.org/10.1088/2058-9565/aa6b8e\">10.1088/2058-9565/aa6b8e</a>","bibtex":"@article{Luo_Herrmann_Silberhorn_2017, title={Temporal correlations of spectrally narrowband photon pair sources}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/aa6b8e\">10.1088/2058-9565/aa6b8e</a>}, number={024002}, journal={Quantum Science and Technology}, author={Luo, Kai Hong and Herrmann, Harald and Silberhorn, Christine}, year={2017} }","mla":"Luo, Kai Hong, et al. “Temporal Correlations of Spectrally Narrowband Photon Pair Sources.” <i>Quantum Science and Technology</i>, 024002, 2017, doi:<a href=\"https://doi.org/10.1088/2058-9565/aa6b8e\">10.1088/2058-9565/aa6b8e</a>.","chicago":"Luo, Kai Hong, Harald Herrmann, and Christine Silberhorn. “Temporal Correlations of Spectrally Narrowband Photon Pair Sources.” <i>Quantum Science and Technology</i>, 2017. <a href=\"https://doi.org/10.1088/2058-9565/aa6b8e\">https://doi.org/10.1088/2058-9565/aa6b8e</a>.","short":"K.H. Luo, H. Herrmann, C. Silberhorn, Quantum Science and Technology (2017).","apa":"Luo, K. H., Herrmann, H., &#38; Silberhorn, C. (2017). Temporal correlations of spectrally narrowband photon pair sources. <i>Quantum Science and Technology</i>, Article 024002. <a href=\"https://doi.org/10.1088/2058-9565/aa6b8e\">https://doi.org/10.1088/2058-9565/aa6b8e</a>","ieee":"K. H. Luo, H. Herrmann, and C. Silberhorn, “Temporal correlations of spectrally narrowband photon pair sources,” <i>Quantum Science and Technology</i>, Art. no. 024002, 2017, doi: <a href=\"https://doi.org/10.1088/2058-9565/aa6b8e\">10.1088/2058-9565/aa6b8e</a>."},"publication":"Quantum Science and Technology","user_id":"36389","doi":"10.1088/2058-9565/aa6b8e","language":[{"iso":"eng"}],"_id":"26058","article_number":"024002","publication_status":"published","date_updated":"2022-01-06T06:57:16Z","author":[{"id":"36389","orcid":"0000-0003-1008-4976","first_name":"Kai Hong","last_name":"Luo","full_name":"Luo, Kai Hong"},{"id":"216","last_name":"Herrmann","first_name":"Harald","full_name":"Herrmann, Harald"},{"last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263"}],"publication_identifier":{"issn":["2058-9565"]},"year":"2017","status":"public","title":"Temporal correlations of spectrally narrowband photon pair sources"},{"volume":2,"doi":"10.1088/2058-9565/aa7abb","user_id":"26263","_id":"21031","language":[{"iso":"eng"}],"article_number":"034012","intvolume":"         2","date_updated":"2023-01-27T08:56:27Z","publication_status":"published","publication_identifier":{"issn":["2058-9565"]},"author":[{"first_name":"Markus","last_name":"Allgaier","full_name":"Allgaier, Markus"},{"full_name":"Vigh, Gesche","last_name":"Vigh","first_name":"Gesche"},{"last_name":"Ansari","first_name":"Vahid","full_name":"Ansari, Vahid"},{"full_name":"Eigner, Christof","last_name":"Eigner","first_name":"Christof","orcid":"https://orcid.org/0000-0002-5693-3083","id":"13244"},{"last_name":"Quiring","first_name":"Viktor","full_name":"Quiring, Viktor"},{"first_name":"Raimund","last_name":"Ricken","full_name":"Ricken, Raimund"},{"full_name":"Brecht, Benjamin","first_name":"Benjamin","orcid":"0000-0003-4140-0556 ","last_name":"Brecht","id":"27150"},{"id":"26263","first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine"}],"title":"Fast time-domain measurements on telecom single photons","status":"public","year":"2017","department":[{"_id":"15"},{"_id":"288"}],"type":"journal_article","date_created":"2021-01-20T08:43:58Z","project":[{"name":"TRR 142 - Subproject C1","_id":"71"}],"citation":{"mla":"Allgaier, Markus, et al. “Fast Time-Domain Measurements on Telecom Single Photons.” <i>Quantum Science and Technology</i>, vol. 2, 034012, 2017, doi:<a href=\"https://doi.org/10.1088/2058-9565/aa7abb\">10.1088/2058-9565/aa7abb</a>.","apa":"Allgaier, M., Vigh, G., Ansari, V., Eigner, C., Quiring, V., Ricken, R., Brecht, B., &#38; Silberhorn, C. (2017). Fast time-domain measurements on telecom single photons. <i>Quantum Science and Technology</i>, <i>2</i>, Article 034012. <a href=\"https://doi.org/10.1088/2058-9565/aa7abb\">https://doi.org/10.1088/2058-9565/aa7abb</a>","ieee":"M. Allgaier <i>et al.</i>, “Fast time-domain measurements on telecom single photons,” <i>Quantum Science and Technology</i>, vol. 2, Art. no. 034012, 2017, doi: <a href=\"https://doi.org/10.1088/2058-9565/aa7abb\">10.1088/2058-9565/aa7abb</a>.","short":"M. Allgaier, G. Vigh, V. Ansari, C. Eigner, V. Quiring, R. Ricken, B. Brecht, C. Silberhorn, Quantum Science and Technology 2 (2017).","ama":"Allgaier M, Vigh G, Ansari V, et al. Fast time-domain measurements on telecom single photons. <i>Quantum Science and Technology</i>. 2017;2. doi:<a href=\"https://doi.org/10.1088/2058-9565/aa7abb\">10.1088/2058-9565/aa7abb</a>","chicago":"Allgaier, Markus, Gesche Vigh, Vahid Ansari, Christof Eigner, Viktor Quiring, Raimund Ricken, Benjamin Brecht, and Christine Silberhorn. “Fast Time-Domain Measurements on Telecom Single Photons.” <i>Quantum Science and Technology</i> 2 (2017). <a href=\"https://doi.org/10.1088/2058-9565/aa7abb\">https://doi.org/10.1088/2058-9565/aa7abb</a>.","bibtex":"@article{Allgaier_Vigh_Ansari_Eigner_Quiring_Ricken_Brecht_Silberhorn_2017, title={Fast time-domain measurements on telecom single photons}, volume={2}, DOI={<a href=\"https://doi.org/10.1088/2058-9565/aa7abb\">10.1088/2058-9565/aa7abb</a>}, number={034012}, journal={Quantum Science and Technology}, author={Allgaier, Markus and Vigh, Gesche and Ansari, Vahid and Eigner, Christof and Quiring, Viktor and Ricken, Raimund and Brecht, Benjamin and Silberhorn, Christine}, year={2017} }"},"publication":"Quantum Science and Technology"}]