Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers
Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers
复制标题
两个空间分离的氮空位中心之间纠缠态的耗散制备
DOI：
10.1103/physreva.85.042306
复制
发表时间：
2012-04-06
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
提出了一种利用两个回音壁模（WGM）微谐振腔产生两个空间分离的氮空位（NV）中心纠缠态的新方案，这两个微谐振腔既可以通过锥形光纤波导耦合，也可以通过WGM的倏逝场耦合.我们发现，两个NV中心的稳态可以通过耗散量子动力学过程转向类单态，其中腔衰减起着积极的作用，可以帮助驱动系统到目标状态。该协议为利用这种固态腔量子电动力学系统进行量子通信和计算开辟了广阔的前景。
We present a novel scheme for the generation of entangled states of two spatially separated nitrogen-vacancy (NV) centers with two whispering-gallery-mode (WGM) microresonators, which are coupled either by an optical fiber-taper waveguide, or by the evanescent fields of the WGM. We show that, the steady state of the two NV centers can be steered into a singlet-like state through a dissipative quantum dynamical process, where the cavity decay plays a positive role and can help drive the system to the target state. The protocol may open up promising perspectives for quantum communications and computations with this solid-state cavity quantum electrodynamic system.