Acta Physica Sinica, Volume. 68, Issue 23, 234203-1(2019)
Fig. 1. Schematic diagram of the NOPA cavity with coherent feedback control.相干反馈操控NOPA的基本原理图
Fig. 2. 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
Fig. 3. Dependences of the quantum correlation noises of two quadrature components for two output beams from CFC-NOPA system on analysis frequency: (a) Transmissivity
Fig. 4. 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
Fig. 5. 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
Fig. 6. Experimental structure of the CFC-NOPA system.CFC-NOPA系统的实验结构图
Fig. 7. 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.
Received: Jul. 30, 2019
Accepted: --
Published Online: Sep. 17, 2020
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