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Algorithm of quantum engineering of large-amplitude high-fidelity Schrödinger cat statesстатья
- Авторы: Podoshvedov Mikhail S., Podoshvedov Sergey A., Kulik Sergei P.
- Журнал: Scientific reports
- Том: 13
- Номер: 3965
- Год издания: 2023
- Издательство: Nature Publishing Group
- Местоположение издательства: United Kingdom
- Первая страница: 3965
- Последняя страница: 4012
- Номер статьи: 3965
- DOI: 10.1038/s41598-023-30218-6
- Аннотация: We present an algorithm of quantum engineering of large-amplitude 5 high-fidelity 0.99 even/oddSchrödinger cat states (SCSs) using a single mode squeezed vacuum (SMSV) state as resource. Set ofk beam splitters (BSs) with arbitrary transmittance and reflectance coefficients sequentially followingeach other acts as a hub that redirects a multiphoton state into the measuring modes simultaneouslymeasured by photon number resolving (PNR) detectors. We show that the multiphoton statesplitting guarantees significant increase of the success probability of the SCSs generator comparedto its implementation in a single PNR detector version and imposes less requirements on ideal PNRdetectors. We prove that the fidelity of the output SCSs and its success probability are in conflict witheach other (which can be quantified) in a scheme with ineffective PNR detectors, especially whensubtracting large (say, 100 ) number of photons, i.e., increasing the fidelity to perfect values leads to asharp decrease in the success probability. In general, the strategy of subtracting up to 20 photons frominitial SMSV in setup with two BSs is acceptable for achieving sufficiently high values of the fidelityand success probability at the output of the generator of the SCSs of amplitude 3 with two inefficientPNR detectors.
- Добавил в систему: Кулик Сергей Павлович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | s41598-023-30218-6.pdf | s41598-023-30218-6.pdf | 5,5 МБ | 12 сентября 2023 [sergei.kulik] |