Entanglement of two hybrid optomechanical cavities composed of BEC atoms under Bell detection

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• 作者：M. Eghbali-Arani ; V. Ameri
• 关键词：Entanglement swapping ; Optomechanics ; Hybrid Systems ; Bose–Einstein condensation
• 刊名：Quantum Information Processing
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：16
• 期：2
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics;
• 出版者：Springer US
• ISSN：1573-1332
• 卷排序：16

文摘

In this paper, firstly, we consider bipartite entanglement between each part of an optomechanical cavity composed of one-dimensional Bose–Einstein condensate (BEC). We investigate atomic collision on the behaviour of the BEC in the week photon–atom coupling constant and use Bogoliubov approximation for the BEC. Secondly under above condition, we propose a scheme for entanglement swapping protocol which involves tripartite systems. In our investigation, we consider a scenario where BECs, moving mirrors, and optical cavity modes are given in a Gaussian state with a covariance matrix. By applying the Bell measurement to the output optical field modes, we show how the remote entanglement between two BECs, two moving mirrors, and BEC-mirror modes in different optomechanical cavity can be generated.