Photon subtraction with a Mach–Zehnder interferometer and its application to entanglement enhancement

Shengli Zhang, Song Yang, Jing Ting Ma

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Photon subtraction (PS) is an important operation for optic quantum information processing. Conventional PS is implemented using a single linear beam splitter (BS) and photon detector. However, in this study, we show that the PS effect can be enhanced using two beam splitters and an optional phase modulator. This can be considered PS with an extended version of the well-known Mach–Zehnder (MZ) interferometer. By tuning the transmittance of the two beam splitters and phase modulator, the probability of success can be considerably improved over that of the original PS scheme with a single BS and photon detector. Moreover, if applied to a single-photon input, our proposed scheme can even implement deterministic PS, which is almost impossible for the original scheme with a single BS and photon detector. Owing to the higher probability of success, applying the PSMZ method to the entanglement enhancement of a very weak two-mode squeezed vacuum state is straightforward. Our result is helpful for improving the yield of output entanglement.

源语言英语
页(从-至)887-900
页数14
期刊Journal of the Optical Society of America B: Optical Physics
41
4
DOI
出版状态已出版 - 1 4月 2024

指纹

探究 'Photon subtraction with a Mach–Zehnder interferometer and its application to entanglement enhancement' 的科研主题。它们共同构成独一无二的指纹。

引用此