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Scheme for Realizing Kerr Nonlinearity in Cavity QED |
| LU Dao-Ming1;ZHENG Shi-Biao2 |
| 1Department of Electronic Engineering, Nanping Teachers College, Wuyishan 3543002Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002 |
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| Cite this article: |
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LU Dao-Ming, ZHENG Shi-Biao 2007 Chin. Phys. Lett. 24 1567-1569 |
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Abstract We propose a scheme for realizing the Kerr-type nonlinearity for a cavity mode. In the scheme the cavity mode interacts with a single three-level atom dispersively. Under certain conditions, the evolution of the cavity field, decoupled from the atomic degree of freedom, corresponds to the Kerr effect. The scheme can be generalized to implement cross-Kerr effect and two-qubit phase gates for two cavity modes.
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| Keywords:
42.50.Dv
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Received: 15 January 2007
Published: 17 May 2007
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| PACS: |
42.50.Dv
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(Quantum state engineering and measurements)
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