Continuous-variable-entanglement swapping and its local certification: Entangling distant mechanical modes
Continuous-variable-entanglement swapping and its local certification: Entangling distant mechanical modes
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DOI：
10.1103/physreva.89.022331
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发表时间：
2014-02-19
影响因子：
2.9
通讯作者：
Vitali, David
中科院分区：
文献类型：
--
作者：
Abdi, Mehdi;Pirandola, Stefano;Vitali, David
我们介绍了一个修改的标准纠缠交换协议，其中两个遥远的模式之间的纠缠的产生实现和验证，只使用本地光学测量。事实上，我们表明，一个简单的条件的纯度的初始状态也涉及一个辅助模式是足够的，以保证成功的协议，由本地测量[M。Abdi，S. Pirandola，P. Tombesi，and D. Vitali，Phys. Rev. Lett. 109，143601（2012）]。我们提出的协议，三方optomechanical系统中，从来没有相互作用的机械模式成为纠缠和认证，只使用本地的光学测量。
We introduce a modification of the standard entanglement swapping protocol where the generation of entanglement between two distant modes is realized and verified using only local optical measurements. We show, indeed, that a simple condition on the purity of the initial state involving also an ancillary mode is sufficient to guarantee the success of the protocol by local measurements [M. Abdi, S. Pirandola, P. Tombesi, and D. Vitali, Phys. Rev. Lett. 109, 143601 (2012)]. We apply the proposed protocol to a tripartite optomechanical system where the never interacting mechanical modes become entangled and certified using only local optical measurements.