论文标题
通过连续测量和反馈控制在宏观对象之间产生量子纠缠
Generating quantum entanglement between macroscopic objects with continuous measurement and feedback control
论文作者
论文摘要
这项研究旨在研究在连续测量和反馈控制下，在光力学系统中产生量子纠缠的可行性。我们小心地通过假定的腔体光子耗散使用卡尔曼过滤问题，以稳定状态的机械镜来得出一个协方差矩阵，从而通过测量输出光束的作用来挤压镜子的常见和差异模式。我们证明，当常见和差异模式的状态以不对称方式挤压时，机械镜之间的纠缠是在机械镜之间产生的。我们的结果还表明，在短期内可以实现$ 7 $毫克的镜子之间的量子纠缠。
This study is aimed at investigating the feasibility of generating quantum entanglement between macroscopic mechanical mirrors in optomechanical systems while under continuous measurement and feedback control. We carefully derive a covariance matrix for mechanical mirrors in a steady state, employing the Kalman filtering problem with an assumed dominant cavity photon dissipation, such that the common and differential modes of the mirrors are squeezed by the action of measuring the output light beams. We demonstrate that entanglement between the mechanical mirrors is generated when the states of the common and differential modes are squeezed with high purity in an asymmetric manner. Our results also show that quantum entanglement between $7$ mg mirrors is achievable in the short term.
