A scheme for conditional quantum phase gate viabimodal cavity and a Λ-type three-level atom
Cai Jian-Wu(蔡建武)a)b), Fang Mao-Fa(方卯发)a)†, Liao Xiang-Ping(廖湘平)a)b), and Zheng Xiao-Juan(郑小娟)a)
a College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; b Department of Physics Science and Electronics, Zhuzhou Teacher' College, Zhuzhou 412007, China
Abstract We propose a scheme to implement a two-qubit conditional quantum phase gatefor the intracavity field viaa single three-level $\Lambda$-type atom driven by two modes in a high-Q cavity. The quantum information is encoded on the Fock states of the bimodal cavity. The gate's averaged fidelity is expected to reach $99.8\%$.
Received: 22 November 2005
Revised: 08 January 2006
Accepted manuscript online:
Fund: Project supported by
the National Natural Science Foundation of
China (Grant No 10374025).
Cite this article:
Cai Jian-Wu(蔡建武), Fang Mao-Fa(方卯发), Liao Xiang-Ping(廖湘平), and Zheng Xiao-Juan(郑小娟) A scheme for conditional quantum phase gate viabimodal cavity and a Λ-type three-level atom 2006 Chinese Physics 15 2518
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