Improved photon blockade in the two-photon Jaynes–Cummings model by additional quantum interference

被引：0

作者：

Liu, Xin ^{[1
]}

Cui, XiaoNing ^{[1
]}

Tian, MengYu ^{[2
]}

Sun, Chao ^{[1
]}

Zhu, YuFan ^{[1
]}

机构：

[1] School of Physics and Technology, University of Jinan, 336 Nanxinzhuang West Road, Jinan,250022, China

[2] Marketing Service Center (Center of Metrology), State Grid ShanDong Electric Power Company, 150 Jinger Road, Jinan,250001, China

来源：

European Physical Journal D | 2024年 / 78卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Coulomb blockade - Jaynes-Cummings model - Photons - Quantum interference devices - Two photon processes;

D O I：

10.1140/epjd/s10053-024-00936-1

中图分类号：

学科分类号：

摘要：

Abstract: In a two-photon Jaynes–Cummings model which consists of an atom interacting with a cavity mode with a two-photon interaction, we find the photon blockade effect can be largely improved by inducing a interference pathway. The interference pathway can be either a two-photon transition or an atom transition. The purity of the single photon can be improved by 10∼100 times, and we find the high purity of single photon is induced by combination of conventional and unconventional photon blockade. The method provides a way to improve the purity of single photon. Graphic Abstract: In a system consisting of a cavity coupled to a two-level atom via a two-photon interaction, the two photon state can be reduced by destructive interference between different transition pathways. © The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2024.

引用

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