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.
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)
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).
