当前位置: X-MOL 学术Quantum Inf. Process. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enhancement of mechanical entanglement in hybrid optomechanical system
Quantum Information Processing ( IF 2.5 ) Pub Date : 2020-10-06 , DOI: 10.1007/s11128-020-02888-y
Amjad Sohail , Mishal Rana , Sana Ikram , Tariq Munir , Taqmeem Hussain , Rizwan Ahmed , Chang-shui Yu

We present a theoretical scheme for the enhancement of entanglement between the two distant mechanical resonators in a hybrid optomechanical system which is composed of a single-mode optomechanical cavity with an atomic ensemble of two-level atoms and two mechanical resonators coupled via Coulomb field. Our results show that the atomic detuning, collective atomic coupling and Coulomb interaction play a vital role in obtaining the enhanced entanglement between the two distant mechanical resonators. We can interplay these controlling parameters to obtain optimal entanglement for the system. Interestingly, the numerical simulation result reveals that such bi-partite entanglement persists for bath temperature up to 600 K. In the end, we show that the system’s interaction with the atomic ensemble lead to an enhanced entanglement spectrum, which is robust against bath temperature as well. The present scheme will open new perspectives in constructing entanglement between two distant resonators and helpful to realize quantum memories for the continuous-variable quantum information processing.



中文翻译:

混合光机系统中机械纠缠的增强

我们提出了一种增强混合光机械系统中两个遥远机械谐振器之间纠缠的理论方案,该系统由一个具有两级原子的原子团的单模光机械腔和两个通过库仑场耦合的机械谐振器组成。我们的结果表明,原子失谐,集体原子耦合和库仑相互作用在获得两个遥远的机械谐振器之间增强的纠缠中起着至关重要的作用。我们可以相互作用这些控制参数以获得系统的最佳纠缠。有趣的是,数值模拟结果表明,在浴温高达600 K时,这种两部分纠缠仍然存在。最后,我们证明了该系统与原子团的相互作用导致纠缠谱增强,对浴温也很稳定。该方案将为构造两个遥远的谐振器之间的纠缠开辟新的视角,并有助于实现用于连续变量量子信息处理的量子存储器。

更新日期:2020-10-07
down
wechat
bug