Observation of-9 dB quadrature squeezing with improvement of phase stability in homodyne measurement
Observation of-9 dB quadrature squeezing with improvement of phase stability in homodyne measurement
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DOI：
10.1364/oe.15.004321
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发表时间：
2007-04-02
期刊：
影响因子：
3.8
通讯作者：
Furusawa, Akira
中科院分区：
文献类型：
--
作者：
Takeno, Yuishi;Yukawa, Mitsuyoshi;Furusawa, Akira
在零差测量中，我们观察到了-9.01+/-0.14分贝的压缩和+15.12+/-0.14分贝的反压缩。Suzuki et al.在[应用]中指出了两个主要因素。太棒了。让我们来吧。89,061116(2006年)]，这降低了观察到的压缩水平：零差测量中的相位波动和用于压缩的光学参量振荡器的腔内损耗。提高了零差测量的相位稳定性，降低了腔内损耗。我们测量了泵浦功率对压缩和反压缩能级的依赖关系，与考虑了位相涨落的理论计算符合得很好。(C)2007年美国光学学会。
We observe -9.01 +/- 0.14 dB of squeezing and +15.12 +/- 0.14 dB of antisqueezing with a local oscillator phase locked in homodyne measurement. Suzuki et al. have pointed out two main factors in [Appl. Phys. Lett. 89, 061116 (2006)], which degrade the observed squeezing level: phase fluctuation in homodyne measurement and intracavity losses of an optical parametric oscillator for squeezing. We have improved the phase stability of homodyne measurement and have reduced the intracavity losses. We measure pump power dependences of the squeezing and antisqueezing levels, which show good agreement with theoretical calculations taking account of the phase fluctuation. (c) 2007 Optical Society of America.