| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Schemes for Generating Cluster States via Cavity Systems |
| DU Gang, LAI Bo-Hui, YU Ya-Fei, ZHANG Zhi-Ming |
| Laboratory of Photonic Information Technology, LQIT and SIPSE, South China Normal University, Guangzhou 510006 |
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| Cite this article: |
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DU Gang, LAI Bo-Hui, YU Ya-Fei et al 2009 Chin. Phys. Lett. 26 104201 |
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Abstract We propose a scheme for generating an N-atom cluster state via cavity quantum electrodynamics (CQED). In our scheme, there is no transfer of quantum information between the atoms and the cavity, i.e., the cavity is always in the vacuum state, so the cavity decay can be suppressed. Also, the generated cluster state is the entanglement of the ground states, so the atomic spontaneous emission can be avoided. Therefore, the cluster state generated in our scheme has a longer lifetime. Furthermore, the requirement on the quality factor of the cavity greatly loosened for the cavity is only virtually excited.
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| Keywords:
42.50.Ct
42.50.Pq
03.67.Mn
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Received: 07 April 2009
Published: 27 September 2009
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| PACS: |
42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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42.50.Pq
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(Cavity quantum electrodynamics; micromasers)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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