Acta Physica Sinica, Volume. 68, Issue 23, 234203-1(2019)

Analysis of entanglement source based on coherent feedback control

Yao-Yao Zhou1、*, Peng-Fei Li1, Zhi-Hui Yan2,3, and Xiao-Jun Jia2,3
Author Affiliations
  • 1Department of Physics, Taiyuan Normal University, Jinzhong 030619, China
  • 2State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
  • 3Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
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    Figures & Tables(7)
    Schematic diagram of the NOPA cavity with coherent feedback control.相干反馈操控NOPA的基本原理图
    Quantum correlation noises of two quadrature components for two output beams from CFC-NOPA system versus the transmissivity of CBS for idle optical field. Each dashed curve represents the value of T2 when the quantum correlation noises of each curve is the minimum.CFC-NOPA系统输出光场正交分量之间的量子关联噪声与CBS对闲置光场的透射率之间的曲线关系, 虚线分别表示各个曲线的关联噪声值最小时T2的取值大小
    Dependences of the quantum correlation noises of two quadrature components for two output beams from CFC-NOPA system on analysis frequency: (a) Transmissivity T1 = 0.3; (b) transmissivity T1 = 0.5; (c) transmissivity T1 = 0.7; (d) transmissivity T1 = 0.7, 0.8, 0.9.CFC-NOPA系统输出光场正交分量之间的量子关联噪声随分析频率的变化曲线 (a) 透射率T1 = 0.3; (b) 透射率T1 = 0.5; (c) 透射率T1 = 0.7; (d)透射率T1 = 0.7, 0.8, 0.9
    Quantum correlation noises of two quadrature components for two output beams from CFC-NOPA system versus transmissivity of output coupler of NOPA. The red dashed curve represents the value of when curve 1 takes the minimum. The blue dashed curves represent the critical value of when the value of curve 2 is less than the minimum value of curve 1. The green dashed curves represent the critical value of when the value of curve 3 is less than the minimum value of curve 2.CFC-NOPA系统输出光场正交分量之间的量子关联噪声随NOPA输出镜透射率的变化曲线 红色虚线表示曲线1取最小值时的大小; 蓝色虚线表示曲线2的取值小于曲线1的最小值时的临界值大小; 绿色虚线表示曲线3的取值小于曲线2的最小值时 的临界值
    Schematic diagram of experimental setup. DBS: dichroic beam splitter; HWP1-2: waveplate; PBS1-3: polarizing beam splitter; BHD1-2: balanced homodyne detectors; SA: spectrum analyzer.实验装置示意图 DBS: 双色分束镜; HWP1-2: 波片; PBS1-3: 偏振分光棱镜; BHD1-2: 平衡零拍探测器; SA: 频谱分析仪
    Experimental structure of the CFC-NOPA system.CFC-NOPA系统的实验结构图
    Diagram of experimental measurement results: (a) The measured amplitude-sum correlation variances noise powers of the output beams; (b) the measured phase-difference correlation variances noise powers of the output beams. The measurement parameters of SA: RBW 10 kHz; VBW 100 Hz.实验测量结果图, SA: RBW 10 kHz; VBW 100 Hz (a)正交振幅分量和的量子噪声功率; (b)正交位相分量差的量子噪声功率
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    Yao-Yao Zhou, Peng-Fei Li, Zhi-Hui Yan, Xiao-Jun Jia. Analysis of entanglement source based on coherent feedback control[J]. Acta Physica Sinica, 2019, 68(23): 234203-1

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    Paper Information

    Received: Jul. 30, 2019

    Accepted: --

    Published Online: Sep. 17, 2020

    The Author Email:

    DOI:10.7498/aps.68.20191168

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