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A Simple Scheme for the Preparation of Four-Photon GHZ States Based on Cavity QED |
ZHANG Deng-Yu, TANG Shi-Qing, WANG Xin-Wen, XIE Li-Jun, ZHAN Xiao-Gui, CHEN Yin-Hua, GAO Feng |
| Department of Physics and Electronic Information Science, and Research Institute of Photoelectricity, Hengyang Normal University, Hengyang 421008 |
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| Cite this article: |
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ZHANG Deng-Yu, TANG Shi-Qing, WANG Xin-Wen et al 2010 Chin. Phys. Lett. 27 070301 |
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Abstract A simple scheme is presented for generating four-photon Greenberger-Horne-Zeilinger states with a large detuned interaction between a three-level atom and two bimodal cavities. In the proposed protocol, the quantum information is encoded on Fock states of the cavity-fields, and the atomic spontaneous emission can be effectively suppressed due to the fact that the excited state of the atom is adiabatically eliminated under the large detuning condition. 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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03.67.Lx
03.67.Bg
42.50.Dv
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Received: 17 March 2010
Published: 28 June 2010
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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03.67.Bg
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(Entanglement production and manipulation)
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42.50.Dv
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(Quantum state engineering and measurements)
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