Robust continuous-variable entanglement of microwave photons with cavity electromechanics
Robust continuous-variable entanglement of microwave photons with cavity electromechanics
复制标题
微波光子与腔机电的鲁棒连续变量纠缠
DOI：
10.1103/physreva.88.043802
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发表时间：
2013-10-02
影响因子：
2.9
通讯作者：
Li, Fu-Li
中科院分区：
文献类型：
--
作者：
Li, Peng-Bo;Gao, Shao-Yan;Li, Fu-Li
We investigate the controllable generation of robust photon entanglement with a circuit cavity electromechanical system, consisting of two superconducting coplanar waveguide cavities capacitively coupled by a nanoscale mechanical resonator. We show that, with this electromechanical system, two-mode continuous-variable entanglement of cavity photons can be engineered deterministically either via coherent control on the dynamics of the system, or through a dissipative quantum-dynamical process. The first scheme, operating in the strong-coupling regime, explores the excitation of the cavity Bogoliubov modes and is insensitive to the initial thermal noise. The second one is based on the reservoir-engineering approach, which exploits the mechanical dissipation as a useful resource to perform ground-state cooling of two delocalized cavity Bogoliubov modes. The achieved amount of entanglement in both schemes is determined by the relative ratio of the effective electromechanical coupling strengths, which thus can be tuned and made much larger than that in previous studies.
