Chinese Optics Letters, 2011, 9 (3): 032701, Published Online: Mar. 4, 2011
Experimental generation of frequency-tunable entangled optical beams with continuous variables 
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连续变量 纠缠光束 频率调谐 270.6570 Squeezed states 190.4410 Nonlinear optics, parametric processes 190.4970 Parametric oscillators and amplifiers 190.4360 Nonlinear optics, devices
Abstract
Frequency tunable continuous variable (CV) entangled optical beams are experimentally demonstrated from a non-degenerate optical parametric oscillator working above the threshold. The measured correlation variances of amplitude and phase quadratures are 3.2 and 1.5 dB, respectively, below the corresponding shot noise level (SNL) in the tuning range of 580 GHz (2.25 nm). The frequency tuning is realized by simply controlling the temperature of the nonlinear crystal.
Zhihui Yan, Yana Shang, Xiaojun Jia, Changde Xie. Experimental generation of frequency-tunable entangled optical beams with continuous variables[J]. Chinese Optics Letters, 2011, 9(3): 032701.
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