Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement
Non-Gaussian states of an optical field are important as a proposed resource in quantum information applications. While conditional preparation is a highly successful approach to preparing such states, their quality is limited by detector non-idealities such as dead time, narrow dynamic range, limit...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac0204 |
| _version_ | 1797750056660500480 |
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| author | Alex O C Davis Mattia Walschaers Valentina Parigi Nicolas Treps |
| author_facet | Alex O C Davis Mattia Walschaers Valentina Parigi Nicolas Treps |
| author_sort | Alex O C Davis |
| collection | DOAJ |
| description | Non-Gaussian states of an optical field are important as a proposed resource in quantum information applications. While conditional preparation is a highly successful approach to preparing such states, their quality is limited by detector non-idealities such as dead time, narrow dynamic range, limited quantum efficiency and dark noise. Mesoscopic photon counters, with peak performance at higher photon number, offer many practical advantages over single-photon level conditioning detectors. Here we propose a novel approach involving displacement of the ancilla field into the regime where mesoscopic detectors can be used. We explore this strategy theoretically and present simulations accounting for experimental non-idealities such as loss and amplification noise, showing that precise photon-number resolution is not necessary to herald highly nonclassical states. We conclude that states with strong Wigner negativity can be prepared at high rates by this technique under experimentally attainable conditions. |
| first_indexed | 2024-03-12T16:27:19Z |
| format | Article |
| id | doaj.art-3dafd58fccae4095a5e677dd0c1fb551 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:27:19Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-3dafd58fccae4095a5e677dd0c1fb5512023-08-08T15:38:50ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123606303910.1088/1367-2630/ac0204Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurementAlex O C Davis0https://orcid.org/0000-0002-2097-4246Mattia Walschaers1Valentina Parigi2https://orcid.org/0000-0002-0779-1971Nicolas Treps3Laboratoire Kastler Brossel, Sorbonne Université, CNRS , ENS-Université PSL, Collège de France; 4 place Jussieu, F-75252 Paris, France; Centre for Photonics and Photonic Materials, Department of Physics, University of Bath , Bath BA2 7AY, United KingdomLaboratoire Kastler Brossel, Sorbonne Université, CNRS , ENS-Université PSL, Collège de France; 4 place Jussieu, F-75252 Paris, FranceLaboratoire Kastler Brossel, Sorbonne Université, CNRS , ENS-Université PSL, Collège de France; 4 place Jussieu, F-75252 Paris, FranceLaboratoire Kastler Brossel, Sorbonne Université, CNRS , ENS-Université PSL, Collège de France; 4 place Jussieu, F-75252 Paris, FranceNon-Gaussian states of an optical field are important as a proposed resource in quantum information applications. While conditional preparation is a highly successful approach to preparing such states, their quality is limited by detector non-idealities such as dead time, narrow dynamic range, limited quantum efficiency and dark noise. Mesoscopic photon counters, with peak performance at higher photon number, offer many practical advantages over single-photon level conditioning detectors. Here we propose a novel approach involving displacement of the ancilla field into the regime where mesoscopic detectors can be used. We explore this strategy theoretically and present simulations accounting for experimental non-idealities such as loss and amplification noise, showing that precise photon-number resolution is not necessary to herald highly nonclassical states. We conclude that states with strong Wigner negativity can be prepared at high rates by this technique under experimentally attainable conditions.https://doi.org/10.1088/1367-2630/ac0204quantum opticsquantum informationquantum state preparationnon-Gaussian states |
| spellingShingle | Alex O C Davis Mattia Walschaers Valentina Parigi Nicolas Treps Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement New Journal of Physics quantum optics quantum information quantum state preparation non-Gaussian states |
| title | Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement |
| title_full | Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement |
| title_fullStr | Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement |
| title_full_unstemmed | Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement |
| title_short | Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement |
| title_sort | conditional preparation of non gaussian quantum optical states by mesoscopic measurement |
| topic | quantum optics quantum information quantum state preparation non-Gaussian states |
| url | https://doi.org/10.1088/1367-2630/ac0204 |
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