Low-Noise Intensity Amplification of a Bright Entangled Beam  

作　　者：Yanbo Lou Xiaoyin Xu Shengshuai Liu Jietai Jing 娄彦博;徐笑吟;刘胜帅;荆杰泰(State Key Laboratory of Precision Spectroscopy,Joint Institute of Advanced Science and Technology,School of Physics and Electronic Science,East China Normal University,Shanghai 200062,China;CAS Center for Excellence in Ultra-intense Laser Science,Shanghai 201800,China;Department of Physics,Zhejiang University,Hangzhou 310027,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]State Key Laboratory of Precision Spectroscopy,Joint Institute of Advanced Science and Technology,School of Physics and Electronic Science,East China Normal University,Shanghai 200062,China [2]CAS Center for Excellence in Ultra-intense Laser Science,Shanghai 201800,China [3]Department of Physics,Zhejiang University,Hangzhou 310027,China [4]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Chinese Physics Letters》2021年第9期6-10,共5页中国物理快报（英文版）

基　　金：Supported by the Innovation Program of Shanghai Municipal Education Commission(Grant No.2021-01-07-00-08-E00100);the National Natural Science Foundation of China(Grant Nos.11874155,91436211,11374104);the Basic Research Project of Shanghai Science and Technology Commission(20JC1416100);the Natural Science Foundation of Shanghai(Grant No.17ZR1442900);Minhang Leading Talents(Grant No.201971),the Program of Scientific and Technological Innovation of Shanghai(Grant No.17JC1400401);the Shanghai Sailing Program(Grant No.21YF1410800);the National Basic Research Program of China(Grant No.2016YFA0302103);the Shanghai Municipal Science and Technology Major Project(Grant No.2019SHZDZX01);the 111 Project(Grant No.B12024).

摘　　要：We experimentally demonstrate a low-noise phase-sensitive amplifier(PSA)scheme that is able to amplify bright entangled beams at a high level intensity gain of up to 4.4.Moreover,we demonstrate that the PSA scheme introduces much less uncorrelated extra noise to the entangled state than the phase-insensitive amplifier scheme with the same intensity gain.This PSA scheme has potential applications for quantum communication in continuous variable regimes.

关 键 词：scheme QUANTUM phase 

分 类 号：O431.2[机械工程—光学工程]