{"publication_status":"published","publication_identifier":{"issn":["2334-2536"]},"citation":{"ieee":"F. Thiele <i>et al.</i>, “Cryogenic feedforward of a photonic quantum state,” <i>Optica</i>, vol. 12, no. 5, Art. no. 720, 2025, doi: <a href=\"https://doi.org/10.1364/optica.551287\">10.1364/optica.551287</a>.","apa":"Thiele, F., Lamberty, N., Hummel, T., Lange, N. A., Procopio Peña, L. M., Barua, A., Lengeling, S., Quiring, V., Eigner, C., Silberhorn, C., &#38; Bartley, T. (2025). Cryogenic feedforward of a photonic quantum state. <i>Optica</i>, <i>12</i>(5), Article 720. <a href=\"https://doi.org/10.1364/optica.551287\">https://doi.org/10.1364/optica.551287</a>","chicago":"Thiele, Frederik, Niklas Lamberty, Thomas Hummel, Nina Amelie Lange, Lorenzo Manuel Procopio Peña, Aishi Barua, Sebastian Lengeling, et al. “Cryogenic Feedforward of a Photonic Quantum State.” <i>Optica</i> 12, no. 5 (2025). <a href=\"https://doi.org/10.1364/optica.551287\">https://doi.org/10.1364/optica.551287</a>.","short":"F. Thiele, N. Lamberty, T. Hummel, N.A. Lange, L.M. Procopio Peña, A. Barua, S. Lengeling, V. Quiring, C. Eigner, C. Silberhorn, T. Bartley, Optica 12 (2025).","ama":"Thiele F, Lamberty N, Hummel T, et al. Cryogenic feedforward of a photonic quantum state. <i>Optica</i>. 2025;12(5). doi:<a href=\"https://doi.org/10.1364/optica.551287\">10.1364/optica.551287</a>","mla":"Thiele, Frederik, et al. “Cryogenic Feedforward of a Photonic Quantum State.” <i>Optica</i>, vol. 12, no. 5, 720, Optica Publishing Group, 2025, doi:<a href=\"https://doi.org/10.1364/optica.551287\">10.1364/optica.551287</a>.","bibtex":"@article{Thiele_Lamberty_Hummel_Lange_Procopio Peña_Barua_Lengeling_Quiring_Eigner_Silberhorn_et al._2025, title={Cryogenic feedforward of a photonic quantum state}, volume={12}, DOI={<a href=\"https://doi.org/10.1364/optica.551287\">10.1364/optica.551287</a>}, number={5720}, journal={Optica}, publisher={Optica Publishing Group}, author={Thiele, Frederik and Lamberty, Niklas and Hummel, Thomas and Lange, Nina Amelie and Procopio Peña, Lorenzo Manuel and Barua, Aishi and Lengeling, Sebastian and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and et al.}, year={2025} }"},"publication":"Optica","issue":"5","intvolume":"        12","author":[{"id":"50819","first_name":"Frederik","last_name":"Thiele","full_name":"Thiele, Frederik","orcid":"0000-0003-0663-5587"},{"full_name":"Lamberty, Niklas","last_name":"Lamberty","first_name":"Niklas","id":"75307"},{"orcid":"0000-0001-8627-2119","full_name":"Hummel, Thomas","last_name":"Hummel","first_name":"Thomas","id":"83846"},{"first_name":"Nina Amelie","id":"56843","orcid":"0000-0001-6624-7098","last_name":"Lange","full_name":"Lange, Nina Amelie"},{"last_name":"Procopio Peña","full_name":"Procopio Peña, Lorenzo Manuel","first_name":"Lorenzo Manuel","id":"105816"},{"first_name":"Aishi","full_name":"Barua, Aishi","last_name":"Barua"},{"id":"44373","first_name":"Sebastian","full_name":"Lengeling, Sebastian","last_name":"Lengeling"},{"last_name":"Quiring","full_name":"Quiring, Viktor","first_name":"Viktor"},{"id":"13244","first_name":"Christof","last_name":"Eigner","full_name":"Eigner, Christof","orcid":"https://orcid.org/0000-0002-5693-3083"},{"full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine","id":"26263"},{"full_name":"Bartley, Tim","last_name":"Bartley","id":"49683","first_name":"Tim"}],"year":"2025","user_id":"50819","article_number":"720","type":"journal_article","volume":12,"date_updated":"2025-06-04T18:35:59Z","publisher":"Optica Publishing Group","_id":"60136","title":"Cryogenic feedforward of a photonic quantum state","language":[{"iso":"eng"}],"doi":"10.1364/optica.551287","status":"public","date_created":"2025-06-04T18:34:16Z","abstract":[{"text":"<jats:p>Modulation conditioned on measurements on entangled photonic quantum states is a cornerstone technology of optical quantum information processing. Performing this task with low latency requires combining single-photon-level detectors with both electronic logic processing and optical modulation in close proximity. Here, we demonstrate low-latency feedforward using a quasi-photon-number-resolved measurement on a quantum light source. Specifically, we use a multipixel superconducting nanowire single-photon detector, amplifier, logic, and an integrated electro-optic modulator <jats:italic toggle=\"yes\">in situ</jats:italic> below 4 K. We modulate the signal mode of a spontaneous parametric down-conversion source, conditional on a photon-number measurement of the idler mode, with a total latency of (23±3)ns. Furthermore, we investigate the resulting change in the photon statistics. This represents an important benchmark for the fastest quantum photonic feedforward experiments comprising measurement, amplification, logic, and modulation. This has direct applications in quantum computing, communication, and simulation protocols.</jats:p>","lang":"eng"}]}