论文标题
在具有连贯反馈回路的空腔宏伟的磁孔 - photon-phonon纠缠的增强
Enhancement of magnon-photon-phonon entanglement in a cavity magnomechanics with coherent feedback loop
论文作者
论文摘要
我们提出了一种使用相干反馈回路改善腔宏伟巨型机械中的镁 - 光子孔纠缠的方案。此外，我们证明系统的稳态和动态状态是真正的三方纠缠状态。我们将对数负性用作量子相关性的见证，以量化所有两部分子系统的纠缠，并通过稳定和动力学的方式通过非零的最小残留局势通过非零的最小残留局势进行了真正的三方纠缠。我们考虑可行的实验参数以实现三方纠缠。我们表明，使用相干反馈可以使用光束分离器的反射参数进行适当的调整，可以通过相干反馈显着改善纠缠。纠缠与热效应是可靠的。我们改善纠缠的建议计划可能是量子信息中的应用程序。
We propose a scheme to improve magnon-photon-phonon entanglement in cavity magnomechanics using coherent feedback loop. In addition, we prove that the steady state and dynamical state of the system is a genuine tripartite entanglement state. We use the logarithmic negativity as the witness of quantum correlations to quantify the entanglement of all bipartite subsystem, and genuine tripartite entanglement via the nonzero minimum residual contangle, in steady and dynamical regime. We consider the feasible experiment parameters to realize the tripartite entanglement. We show that the entanglement can be significantly improved with coherent feedback using a suitable tuning of the reflective parameter of the beam splitter. The entanglement is robust against the thermal effects. Our proposal scheme to improve the entanglement can be of interest to applications in quantum information.
