Bichromatic homodyne detection of broadband quadrature squeezing
Bichromatic homodyne detection of broadband quadrature squeezing
复制标题
DOI：
10.1364/oe.24.027298
复制
发表时间：
2016-11-28
期刊：
影响因子：
3.8
通讯作者：
Boyer, Vincent
中科院分区：
文献类型：
--
作者：
Embrey, Christopher S.;Hordell, Joshua;Boyer, Vincent
我们在实验上研究了一种用于描述正交压缩场的零差探测技术，其中由热原子蒸气中的四波混频产生的关联频带被大于6 GHz的大频隙分开。该技术使用双频本地振荡器在检测电子设备可访问的频率上检测相关频带的波动。该方法工作在较低的探测频率下，可以同时确定压缩谱的幅度和相位。特别地，我们证明了由我们的四波混频过程产生的正交压缩在压缩谱上表现出pi/2的噪声椭圆旋转。(C)2016年度美国光学学会
We experimentally study a homodyne detection technique for the characterization of a quadrature squeezed field where the correlated bands, here created by four-wave mixing in a hot atomic vapor, are separated by a large frequency gap of more than 6 GHz. The technique uses a two-frequency local oscillator to detect the fluctuations of the correlated bands at a frequency accessible to the detection electronics. Working at low detection frequency, the method allows for the determination of both the amplitude and the phase of the squeezing spectrum. In particular, we show that the quadrature squeezing created by our four-wave mixing process displays a noise ellipse rotation of pi/2 across the squeezing spectrum. (C) 2016 Optical Society of America