Phys. Rev. A 70, 042314 (2004) [5 pages]

Realizing quantum controlled phase flip through cavity QED

Abstract

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Yun-Feng Xiao^*, Xiu-Min Lin, Jie Gao, Yong Yang, Zheng-Fu Han^†, and Guang-Can Guo^‡
Key Laboratory of Quantum Information, University of Science and Technology of China (CAS), Hefei 230026, People’s Republic of China

Received 26 April 2004; published 25 October 2004

We propose a scheme to realize quantum controlled phase flip (CPF) between two rare-earth ions embedded in the respective microsphere cavity via interacting with a single-photon pulse in sequence. The numerical simulations illuminate that the CPF gate between ions is robust and scalable with extremely high fidelity and low error rate. Our scheme is more applicable than other schemes presented before based on current laboratory cavity-QED technology, and it is possible to be used as an applied unit gate in future quantum computation and quantum communication.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.70.042314

DOI:

10.1103/PhysRevA.70.042314

PACS:

03.67.Lx, 32.80.Qk, 42.50.−p

^*Electronic address: yfxiao@mail.ustc.edu.cn

^†Electronic address: zfhan@ustc.edu.cn

^‡Electronic address: gcguo@ustc.edu.cn

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Phys. Rev. A 70, 042314 (2004) [5 pages]

Realizing quantum controlled phase flip through cavity QED