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不同光学腔中远距离原子间量子相位门的实现

Conditional quantum controlled-phase gate between distant atoms in optical cavities

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摘要

提出了一个实现处在不同光学腔中的远距离原子之间的量子受控相位门方案,通过利用光子的稳定性和原子-光子在光学腔中的强耦合作用, 得到了不同原子间的 幺正演化操作。该方案不受腔中光子衰减和原子自发辐射产生的消相干影响, 使受控相位门操作具有高保真度。

Abstract

A scheme is proposed to implement a quantum controlled-phase gate between two four-level atoms inside the different optical cavities. The scheme combines the advantage of scalability from the photon and power of strong atom-photon coupling, which yields the desired unitary evolution operation. The scheme is immune to decoherence due to cavity photon decay and atomic spontaneous emission, and the operation is implemented probabilistically with a very high fidelity.

广告组4 - 量子光学(超导单光子,符合计数器)
补充资料

中图分类号:O431.2

所属栏目:量子光学

收稿日期:2009-10-23

修改稿日期:2009-11-30

网络出版日期:0001-01-01

作者单位    点击查看

樊洋:海军工程大学理学院, 湖北 武汉 430033
李定国:海军工程大学理学院, 湖北 武汉 430033

联系人作者:樊洋(ericfan626@ahoo.com.cn)

备注:樊洋(1981-), 海军工程大学理学院讲师, 研究方向为量子光学。

【1】Deutsch D. Quantum theory, the Church-Turing principle and the universal quantum computer [C]. Proc. R. Soc., London: Ser. A, 1985, 400: 97-117.

【2】Grover L K. Quantum computers can search arbitrarily large databases by a single query [J]. Phys. Rev. Lett., 1995, 79: 4709-4712.

【3】Geng Tao, Li Gang, Wang Junming, et al. Cavity QED and quantum information process [J]. Chinese Journal of Quantum Electronics (量子电子学报), 2004, 21(6): 719-724 (in Chinese).

【4】Duan L M, Wang B, et al. Robust quantum gates on neutral atoms with cavity-assisted photon scattering [J]. Phys. Rev. A, 2005, 72: 032333.

【5】Zou X B, Mathis W. Conditional quantum phase gate using distant atoms and linear optics [J]. Phys. Rev. A, 2005, 71: 042334.

【6】Zou X B, Li K, Guo G C. Linear optical scheme for direct implementation of a nondestructive N-qubit controlled phase gate [J]. Phys. Rev. A, 2006, 74: 044305.

【7】Wei H, Deng Z J, Zhang X L, et al. Transfer and teleportation of quantum states encoded in decoherence-free subspace [J]. Phys. Rev. A, 2007, 76: 054304.

【8】Xiao Y F, Zou X B, Guo G C. One-step implementation of an N-qubit controlled-phase gate with neutral atoms trapped in an optical cavity [J]. Phys. Rev. A, 2007, 75: 054303.

【9】Xia Y, Song J, Song H S. Robust implementation of a nonlocal N-qubit phase gate by interference of polarized photons [J]. Chin. Phys. Lett., 2008, 25: 3150-3153.

【10】Lee J, Park J, Lee S M, et al. Scalable cavity-QED-based scheme of generating entanglement of atoms and of cavity fields [J]. Phys. Rev. A, 2008, 77: 032327.

【11】Plenio M B, Knight P L. The quantum-jump approach to dissipative dynamics in quantum optics [J]. Rev. Mod. Phys., 1998, 70: 101-144.

【12】Kim J, Takeuchi S, Yamamoto Y. Multiphoton detection using visible light photon counter [J]. Appl. Phys. Lett., 1999, 74: 902-904.

【13】Maunz P, Moehring D L, Olmschenk S, et al. Quantum interference of photon pairs from two remote trapped atomic ions [J]. Nature Physics, 2007, 3: 538.

【14】Raimond J M, Brune M, et al. Manipulating quantum entanglement with atoms and photons in a cavity [J]. Rev. Mod. Phys., 2001, 73: 565-582.

【15】Blinov B B, Moehring D L, Duan L M, et al. Observation of entanglement between a single trapped atom and a single photon [J]. Nature, 2004, 428: 153-157.

引用该论文

FAN Yang,LI Ding-guo. Conditional quantum controlled-phase gate between distant atoms in optical cavities[J]. Chinese Journal of Quantum Electronics, 2010, 27(5): 554-557

樊洋,李定国. 不同光学腔中远距离原子间量子相位门的实现[J]. 量子电子学报, 2010, 27(5): 554-557

被引情况

【1】刘文鹏,宋学科,叶柳. 腔QED中实现控制量子逻辑门的简易方案. 量子电子学报, 2013, 30(6): 738-742

【2】陈月月,刘呈普,冯勋立. 克服腔QED中比特反转错误的无退相干子空间量子计算. 量子电子学报, 2016, 33(5): 553-560

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