| A scheme for conditional quantum phase gate viabimodal cavity and a Λ-type three-level atom |
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| 作者姓名： | 蔡建武 方卯发 廖湘平 郑小娟 |
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| 作者单位： | College of Physics and Information Science, Hunan Normal University, Changsha 410081, China |
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| 基金项目： | Project supported bythe National Natural Science Foundation ofChina (Grant No 10374025). |
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| 摘 要： | We propose a scheme to implement a two-qubit conditional quantumphase gatefor the intracavity field viaa single three-level$Lambda$-type atom driven by two modes in a high-Q cavity. Thequantum information is encoded on the Fock states of the bimodalcavity. The gate's averaged fidelity is expected to reach $99.8%$.
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| 关 键 词： | 量子相门 ∧-型三层原子 双峰腔 保真度 |
| 收稿时间： | 2005-11-22 |
| 修稿时间： | 2006-01-08 |
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