Su Xiaolong, Tan Aihong, Jia Xiaojun, Pan Qing, Xie Changde, Peng Kunchi
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China.
Opt Lett. 2006 Apr 15;31(8):1133-5. doi: 10.1364/ol.31.001133.
The quantum entanglement of amplitude and phase quadratures between two intense optical beams with a total intensity of 22 mW and a frequency difference of 1 nm, which are produced from an optical parametric oscillator operating above threshold, is experimentally demonstrated with two sets of unbalanced Mach-Zehnder interferometers. The measured quantum correlations of intensity and phase are in reasonable agreement with the results calculated based on a semiclassical analysis of the noise characteristics given by Fabre et al. [J. Phys. (France) 50, 1209 (1989)].
通过两组非平衡马赫-曾德尔干涉仪，实验证明了由阈值以上工作的光学参量振荡器产生的、总强度为22毫瓦且频率差为1纳米的两束强光之间幅度和相位正交的量子纠缠。测量得到的强度和相位的量子关联与基于法布勒等人[《法国物理杂志》50, 1209 (1989)]给出的噪声特性的半经典分析所计算的结果合理吻合。
