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A Scheme for Atomic Entangled States and Quantum Gate Operations in Cavity QED |
| LI Peng-Bo1, GU Ying1, GONG Qi-Huang1, GUO Guang-Can1,2 |
| 1State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 1008712Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 |
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LI Peng-Bo, GU Ying, GONG Qi-Huang et al 2009 Chin. Phys. Lett. 26 030301 |
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Abstract We propose a scheme for controllably entangling the ground states of five-state W-type atoms confined in a cavity and realizing swap gate and phase gate operations. In this scheme the cavity is only virtually excited and the atomic excited states are almost not occupied, so the produced entangled states and quantum logic operations are very robust against the cavity decay and atomic spontaneous emission.
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| Keywords:
03.67.Mn
03.67.Lx
42.50.Pq
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Received: 17 July 2008
Published: 19 February 2009
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| PACS: |
03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.67.Lx
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(Quantum computation architectures and implementations)
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42.50.Pq
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(Cavity quantum electrodynamics; micromasers)
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