{"scopus_import":"1","publisher":"American Physical Society","date_created":"2023-11-19T23:00:54Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"oa_version":"Preprint","status":"public","title":"Continuous-variable quantum tomography of high-amplitude states","quality_controlled":"1","date_updated":"2023-11-20T10:26:51Z","article_processing_charge":"No","month":"10","day":"30","type":"journal_article","abstract":[{"text":"Quantum state tomography is an essential component of modern quantum technology. In application to continuous-variable harmonic-oscillator systems, such as the electromagnetic field, existing tomography methods typically reconstruct the state in discrete bases, and are hence limited to states with relatively low amplitudes and energies. Here, we overcome this limitation by utilizing a feed-forward neural network to obtain the density matrix directly in the continuous position basis. An important benefit of our approach is the ability to choose specific regions in the phase space for detailed reconstruction. This results in a relatively slow scaling of the amount of resources required for the reconstruction with the state amplitude, and hence allows us to dramatically increase the range of amplitudes accessible with our method.","lang":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2212.07406"}],"department":[{"_id":"JoFi"}],"issue":"4","publication_status":"published","date_published":"2023-10-30T00:00:00Z","year":"2023","volume":108,"intvolume":"       108","publication_identifier":{"eissn":["2469-9934"],"issn":["2469-9926"]},"external_id":{"arxiv":["2212.07406"]},"doi":"10.1103/PhysRevA.108.042430","author":[{"orcid":"0000-0001-7242-015X","first_name":"Ekaterina","last_name":"Fedotova","full_name":"Fedotova, Ekaterina","id":"c1bea5e1-878e-11ee-9dff-d7404e4422ab"},{"last_name":"Kuznetsov","first_name":"Nikolai","full_name":"Kuznetsov, Nikolai"},{"last_name":"Tiunov","first_name":"Egor","full_name":"Tiunov, Egor"},{"last_name":"Ulanov","first_name":"A. E.","full_name":"Ulanov, A. E."},{"first_name":"A. I.","last_name":"Lvovsky","full_name":"Lvovsky, A. I."}],"publication":"Physical Review A","language":[{"iso":"eng"}],"_id":"14553","article_number":"042430","citation":{"ieee":"E. Fedotova, N. Kuznetsov, E. Tiunov, A. E. Ulanov, and A. I. Lvovsky, “Continuous-variable quantum tomography of high-amplitude states,” <i>Physical Review A</i>, vol. 108, no. 4. American Physical Society, 2023.","mla":"Fedotova, Ekaterina, et al. “Continuous-Variable Quantum Tomography of High-Amplitude States.” <i>Physical Review A</i>, vol. 108, no. 4, 042430, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevA.108.042430\">10.1103/PhysRevA.108.042430</a>.","short":"E. Fedotova, N. Kuznetsov, E. Tiunov, A.E. Ulanov, A.I. Lvovsky, Physical Review A 108 (2023).","chicago":"Fedotova, Ekaterina, Nikolai Kuznetsov, Egor Tiunov, A. E. Ulanov, and A. I. Lvovsky. “Continuous-Variable Quantum Tomography of High-Amplitude States.” <i>Physical Review A</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevA.108.042430\">https://doi.org/10.1103/PhysRevA.108.042430</a>.","ista":"Fedotova E, Kuznetsov N, Tiunov E, Ulanov AE, Lvovsky AI. 2023. Continuous-variable quantum tomography of high-amplitude states. Physical Review A. 108(4), 042430.","apa":"Fedotova, E., Kuznetsov, N., Tiunov, E., Ulanov, A. E., &#38; Lvovsky, A. I. (2023). Continuous-variable quantum tomography of high-amplitude states. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.108.042430\">https://doi.org/10.1103/PhysRevA.108.042430</a>","ama":"Fedotova E, Kuznetsov N, Tiunov E, Ulanov AE, Lvovsky AI. Continuous-variable quantum tomography of high-amplitude states. <i>Physical Review A</i>. 2023;108(4). doi:<a href=\"https://doi.org/10.1103/PhysRevA.108.042430\">10.1103/PhysRevA.108.042430</a>"},"article_type":"original"}