Schemes for the generation of multipartite entanglement of remote atoms trapped in separate optical cavities

Based on the interference effect of polarized photons leaking out of separate cavities, we propose schemes for the generation of the N-atom Greenberger-Horne-Zeilinger (GHZ) state, three-atom W state and a genuine four-atom entangled state |chi. In these schemes, each of the atoms is trapped separat...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2009-09, Vol.42 (17), p.175506-175506 (8)
Main Authors: Wang, Hong-Fu, Shao, Xiao-Qiang, Zhao, Yong-Fang, Zhang, Shou, Yeon, Kyu-Hwang
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Quantum communication
Quantum computation
Quantum information
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Summary:Based on the interference effect of polarized photons leaking out of separate cavities, we propose schemes for the generation of the N-atom Greenberger-Horne-Zeilinger (GHZ) state, three-atom W state and a genuine four-atom entangled state |chi. In these schemes, each of the atoms is trapped separately in a remote optical cavity, and the possible spontaneous channels induced by the excited atoms lead to the coherent superposition of the states of the atoms. The desired multipartite entangled states can be generated with a certain success probability by the subsequent detection of the polarized photons in different modes. The schemes would be useful steps towards long-distance quantum communication, distributed quantum computation and constructing remote quantum information processing networks.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/42/17/175506