基于原子系综的相敏四波混频过程及其应用  

Phase-sensitive Four-wave Mixing Process Based on Atomic Ensemble and Its Application

作　　者：徐笑吟 刘胜帅 荆杰泰 XU Xiao-yin;LIU Sheng-shuai;JING Jie-tai(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China;CAS Center for Excellence in Ultra-intense Laser Science,Chinese Academy of Sciences,Shanghai 201800,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]华东师范大学精密光谱科学与技术国家重点实验室,上海200062 [2]中国科学院超强激光科学卓越创新中心,上海201800 [3]山西大学极端光学协同创新中心,山西太原030006

出　　处：《量子光学学报》2023年第2期1-15,共15页Journal of Quantum Optics

基　　金：上海市教育委员会科研创新计划(2021-01-07-00-08-E00100);国家自然科学基金(11874155,91436211,11374140,12174110);上海市科学技术委员会科技创新行动计划基础研究领域项目(20JC1416100);上海市自然科学基金(17ZR1442900);闵行领军人才(201971);上海市科技创新行动计划(17JC1400401);上海市青年科技英才扬帆计划(21YF1410800);国家重点基础研究发展计划(2016YFA0302103);上海市市级科技重大专项(2019SHZDZX01);111计划(B12024)。

摘　　要：由于原子相干性可以增强光学非线性效应,基于原子系综的四波混频过程是产生压缩态和纠缠态的一项有前景的技术。光参量放大器中的相敏放大器的增益随输入信号相位的变化而变化,且相敏放大过程具有低噪声特性。因此,基于原子系综的相敏四波混频过程在实际应用中有着潜在的应用价值。本文介绍了基于原子系综的相敏四波混频过程的理论方案,概述了该系统输出光场的量子特性,综述了基于原子系综的相敏四波混频过程在实验上的应用,包括在双模相敏放大器中利用干涉诱导增强了量子压缩,对双模相敏放大器的相位进行操纵以实现两种类型的纠缠,以及用直接强度探测法测量明亮注入SU(1,1)干涉仪的相位灵敏度。Because atomic coherence can enhance optical nonlinearity,the four-wave mixing process in hot rubidium atomic vapor is a promising technology to generate squeezed states and entangled states.Among the optical parametric amplifier,the gain of the phase-sensitive amplifier varies with the phase of the input signal,and the phase-sensitive amplification process has low noise characteristics.Therefore,the phase-sensitive four-wave mixing process in hot rubidium atomic vapor has potential application value in practical application.The theoretical scheme of phase-sensitive four-wave mixing process in hot rubidium atomic vapor is introduced.The quantum characteristics of the output field of the system are summarized.The experimental applications of phase-sensitive four-wave mixing process in hot rubidium atomic vapor are reviewed,including proving the quantum squeezing enhancement in a two-mode phase-sensitive amplifier which is induced by its interference effect,realizing two types of entanglement by manipulating the phase of a two-mode phase sensitive amplifier,introducing the direct intensity detection method to measure the phase sensitivity of the bright-seeded SU(1,1)interferometer.

关 键 词：四波混频 相敏放大器 量子压缩 量子纠缠 

分 类 号：O431[机械工程—光学工程]