论文标题
通过光学参数放大器在腔宏伟的纠缠增强
Entanglement enhancement in cavity magnomechanics by an optical parametric amplifier
论文作者
论文摘要
我们提出了一种使用光学参数放大器（OPA）增强腔宏伟学中双方和三方纠缠的方法。我们分析了该系统，并确定了加强不同类型的纠缠的参数制度。我们表明，参数放大器的阶段的适当选择会导致双方纠缠的增强。此外，在OPA的存在下，三方纠缠也显着增强。与系统相比，与系统相比，OPA不仅可以增强纠缠的强度，而且还增加了更广泛的失调空间的纠缠领域。同样，纠缠对温度的鲁棒性也得到了增强。 OPA的另一个重要结果是，它放宽了强大的磁杆耦合以产生腔杂种纠缠的要求，这对于不存在OPA时所必需的是必要的。我们认为，提出的计划是向前迈出的一步，可以使用当前技术实现强大的量子纠缠。
We propose a method to enhance bipartite and tripartite entanglement in cavity magnomechanics using an optical parametric amplifier (OPA). We analyze this system and identified parametric regimes where different types of entanglement are enhanced. We show that a proper choice of the phase of the parametric amplifier leads to the enhancement of the bipartite entanglements. Moreover, the tripartite entanglement is also significantly enhanced in the presence of OPA. The OPA not only enhances the strength of entanglement but also increases the domain of entanglement over a wider space of detunings as compared to the system when no OPA is present. Similarly, the robustness of entanglement against temperature is also enhanced. Another important consequence of OPA is the fact that it relaxes the requirement of strong magnon-phonon coupling to generate cavity-magnon entanglement which is necessary for the case when OPA is not present. We believe that the presented scheme is a step forward to realize robust quantum entanglement using current technology.
