Quantum beam splitter for orbital angular momentum of light: quantum correlation by four-wave mixing operated in a nonamplifying regime

被引：6

作者：

Liu, Wei ^{[1
]}

Ma, Rong ^{[1
]}

Zeng, Li ^{[1
]}

Qin, Zhongzhong ^{[1
,2
]}

Su, Xiaolong ^{[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, Shanxi, Peoples R China

来源：

OPTICS LETTERS | 2019年 / 44卷 / 08期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

GENERATION;

D O I：

10.1364/OL.44.002053

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nondegenerate four-wave mixing (FWM) process based on a double-Lambda scheme in hot alkali metal vapor is a versatile tool in quantum state engineering, quantum imaging, and quantum precision measurements. In this Letter, we investigate the generation of quantum correlated twin beams which carry nonzero orbital angular momentums (OAMs) based on the FWM process in hot cesium vapor. The amplified probe beam and the newly generated conjugate beam in the FWM process have the same and opposite topological charge as the seed beam, respectively. We also explore the FWM process operated in a nonamplifying regime where quantum correlated twin beams carrying OAMs can still be generated. In this regime, the FWM process plays the role of quantum beam splitter for the OAM of light; that is, a device that can split a coherent light beam carrying OAM into quantum-correlated twin beams carrying OAMs. More generally, our setup can be used as a quantum beam splitter of images. (c) 2019 Optical Society of America

引用

页码：2053 / 2056

页数：4

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