Characterization of squeezed states with controllable coherent light injection at sidebands  

作　　者：Wei Li YuanBin Jin XuDong Yu 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2017年第5期73-76,共4页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.11234008,11361161002,61571276,and 11654002);Natural Science Foundation of Shanxi Province(Grant No.2015011007);Shanxi Scholarship Council of China(Grant No.2015002)

摘　　要：The squeezed state was experimentally produced in the four wave mixing process for the first time thirty years ago [1]. Its intrinsic nonclassical property has always attracted the attention of the scientists, and it has also presented an unpredictable application potential in quantum information pro- cessing [2-6] and quantum metrology [7-9]. For gaining an insight into the quantum state, Bertrand et al. [10] intro- duced the concept of quantum tomography into quantum mechanics in 1987. And in 1997, Breitenbach et al. [11] pre- sented the noise distribution of the squeezed states of light fields and reconstructed the quantum states by balanced homodyne detection （BHD）. If the squeezed state light field has a relatively strong amplitude, BHD is not suitable. Consequently, other approaches have also been studied, such as self-tomography of the twin-beam state [12] and selftomography of the single-mode squeezed light field with an empty cavity [ 13]. These approaches enable people to understand the nature of the quantum state.The squeezed state was experimentally produced in the four wave mixing process for the first time thirty years ago[1].Its intrinsic nonclassical property has always attracted the attention of the scientists,and it has also presented an unpredictable application potential in quantum information processing[2-6]and quantum metrology[7-9].For gaining an insight into the quantum state,Bertrand et al.[10]introduced the concept of quantum tomography into quantum mechanics in 1987.And in 1997,Breitenbach et al.[11]presented the noise distribution of the squeezed states of light fields and reconstructed the quantum states by balanced homodyne detection(BHD).If the squeezed state light field has a relatively strong amplitude,BHD is not suitable.Consequently,other approaches have also been studied,such as self-tomography of the twin-beam state[12]and self-

关 键 词：压缩态光场 特性表征 光注入 相干 可控 量子信息 平衡零拍探测 非经典特性 

分 类 号：O431.2[机械工程—光学工程] TQ572.292[理学—光学]