Realization of nonreciprocal photon statistics by manipulating the quantum nonlinearity of cold atoms in an asymmetric cavity

被引：0

作者：

Yang, Pengfei ^{[1
,2
]}

Wang, Zhihui ^{[1
,2
]}

Fan, Qing ^{[1
,2
]}

Yang, Chen ^{[3
]}

Li, Gang ^{[1
,2
]}

Zhang, Pengfei ^{[1
,2
]}

Zhang, Tiancai ^{[1
,2
]}

机构：

[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China

[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China

[3] Taiyuan Univ Sci & Technol, Sch Appl Sci, Taiyuan 030024, Peoples R China

来源：

OPTICS EXPRESS | 2024年 / 32卷 / 16期

基金：

中国国家自然科学基金;

关键词：

OPTICAL ISOLATION;

D O I：

10.1364/OE.532908

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In a strongly coupled cavity quantum electrodynamics (QED) system, the second- order correlation function g ( 2 ) ( r ) of the transmitted probe light from the cavity is determined by the nonlinearity of the atom in the cavity. Therefore, the system provides a platform for controlling the photon statistics by manipulating nonlinearity. In this paper, we experimentally demonstrate nonreciprocal quantum statistics in a cavity QED system with several atoms strongly coupled to an asymmetric optical cavity, which is composed of two mirrors with different transmittivities. When the direction of the probe light is reversed, the intracavity light field alternates to a different level. Distinct photon statistics are then observed due to the quantum nonlinearity associated with strongly coupled atoms. Sub-Poissonian photon-number statistics for forward light and a Poissonian distribution for backward light are then realized. Our work provides an effective approach for realizing nonreciprocal quantum devices, which have potential applications in the unidirectional generation of nonclassical light fields and quantum sensing. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：28582 / 28589

页数：8

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