腔磁机械系统的量子纠缠特性研究

Study on Quantum Entanglement Properties of Cavity Magnomechanical Systems

对一个由光学微波谐振腔构成的腔磁机械系统进行了数值模拟.此系统研究了光子-磁子-声子间的两两量子纠缠特性以及失谐量、耦合系数、耗散率和温度对量子纠缠特性的影响.研究发现纠缠度在共振和近共振区域较强,并且存在明显的纠缠转移和互补现象.通过对耦合系数和耗散率的探究,能够确定最佳参数范围,进而为实验重现提供新的方案。此外,该系统对温度存在一定的鲁棒性。结果表明,腔磁机械系统可能为宏观量子现象的研究提供一个很有前景的平台.

A cavity magnomechanical system composed of optical microwave resonators is numerically simulated.In this system,the photon-magnon-phonon entanglement is studied.Furthermore,the effects of detuning,coupling coefficient,dissipation rate and temperature on entanglement properties are studied.The entanglement is obvious in the resonant and near resonant regions,and there are obvious entanglement transfer and complementarity phenomena.By exploring the coupling coefficient and dissipation rate,the optimal parameter range can be determined,and a new scheme for experimental reproduction can be provided.In addition,the system is robust to temperature.The results show that cavity magnomechanical systems may provide a promising platform for the study of macroscopic quantum phenomena.