Generation of four-photon GHZ states based on interaction between a four-level atom and two bimodal cavities
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Abstract:
A simple scheme is presented for generating four-photon Greenberger-Horne-Zeilinger (GHZ) states with interaction between a four-level atom and two bimodal cavities. In the proposed protocol, the quantum information is encoded on Fock states of the cavity fields. The detection of the atom can collapse the cavity to the desired state. The experimental feasibility of our proposal is also discussed.
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This work has been supported by the National Natural Science Foundation of China (No.11004050), the Key Scientific Research Fund of Hunan Provincial Education Department of China (Nos.09A013 and 10B013), and the Science and Technology Research Foundation of Hunan Province of China (No.2010FJ4120).
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