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The n-Qubit W State of Ground-State Atoms Using Cavity QED and Single Photon Detection |
| PAN Chang-Ning1, ZHANG Jun-Xiang2, ZHAO Xue-Hui1 |
| 1School of Science, Hunan University of Technology, Zhuzhou 412008 2State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006 |
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| Cite this article: |
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PAN Chang-Ning, ZHANG Jun-Xiang, ZHAO Xue-Hui 2010 Chin. Phys. Lett. 27 030306 |
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Abstract We present a simple scheme for the probabilistic generation of the $n$-qubit W state of three-level systems in cavity quantum electrodynamics. Once the W state is prepared, it will be insensitive to the spontaneous emission of atoms due to the fact that only the two degenerate ground states of the three-level atoms are involved. With time evolution of the system, the success probability and the experimental feasibility are also discussed.
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| Keywords:
03.67.Bg
03.65.Ud
03.65.Ta
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Received: 09 November 2009
Published: 09 March 2010
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| PACS: |
03.67.Bg
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(Entanglement production and manipulation)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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