耗散耦合光机系统中的压缩光和关联光子
Squeezed light and correlated photons from dissipatively coupled optomechanical systems
摘要：
本文从理论上研究了机械振子调制腔线宽（耗散耦合）的光机系统输出光的压缩谱和二阶关联函数。我们发现线性化系统的简正模频率与强压缩相一致。与色散耦合相反，在边带冷却的同时，在解析边带极限中压缩是可能的。二阶关联函数显示阻尼振荡，其性质由类机械、类光学简正模或两者给出，并且可以在有限时间低于散粒噪声水平$g^{(2)} (τ) < 1$。
英文摘要：
We study theoretically the squeezing spectrum and second-order correlation function of the output light for an optomechanical system in which a mechanical oscillator modulates the cavity linewidth (dissipative coupling). We find strong squeezing coinciding with the normal-mode frequencies of the linearized system. In contrast to dispersive coupling, squeezing is possible in the resolved-sideband limit simultaneously with sideband cooling. The second-order correlation function shows damped oscillations, whose properties are given by the mechanical-like, the optical-like normal mode, or both, and can be below shot-noise level at finite times, $g^{(2)} (τ) < 1$.
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