Quantum state swap for two trapped Rydberg atoms

doi:10.1088/1674-1056/21/4/040305

中国物理B ›› 2012, Vol. 21 ›› Issue (4): 40305-040305.doi: 10.1088/1674-1056/21/4/040305

吴怀志¹,杨贞标²,郑仕标¹

收稿日期:2011-05-06 修回日期:2011-12-05 出版日期:2012-02-29 发布日期:2012-02-29
通讯作者: 吴怀志, E-mail:huaizhi.wu@fzu.edu.cn E-mail:huaizhi.wu@fzu.edu.cn

Quantum state swap for two trapped Rydberg atoms

Wu Huai-Zhi(吴怀志)^a)†, Yang Zhen-Biao(杨贞标)^b), and Zheng Shi-Biao(郑仕标)^a)

a. Laboratory of Quantum Optics, Department of Physics, Fuzhou University, Fuzhou 350002, China;
b. Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China

Received:2011-05-06 Revised:2011-12-05 Online:2012-02-29 Published:2012-02-29
Contact: Wu Huai-Zhi, E-mail:huaizhi.wu@fzu.edu.cn E-mail:huaizhi.wu@fzu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China(Grant No.10974028),the Doctoral Foundation of theMinistry of Education of China(Grant No.20093514110009),the Natural Science Foundation of Fujian Province of China(GrantNo.2009J06002),the Fund from Fuzhou University(Grant No.022408),the National Basic Research Program of China(GrantNos.2011CB921200 and 2011CBA00200),and the China Postdoctoral Science Foundation(Grant No.20110490828)

摘要/Abstract

Abstract: The quantum swap gate is one of the most useful gates for quantum computation. Two-qubit entanglement and a controlled-NOT quantum gate in a neutral Rydberg atom system have been achieved in recent experiments. It is therefore very interesting to propose a scheme here for swapping a quantum state between two trapped neutral atoms via the Rydberg blockade mechanism. The atoms interact with a sequence of laser pulses without individual addressing. The errors of the swap gate due to imprecision of pulse length, finite Rydberg interaction, and atomic spontaneous emission are discussed.

Key words: neutral atom, swap gate, Rydberg blockade

中图分类号: (Quantum information)

03.67.-a

32.80.Ee (Rydberg states) 42.50.Dv (Quantum state engineering and measurements)

吴怀志, 杨贞标, 郑仕标. [J]. 中国物理B, 2012, 21(4): 40305-040305.

Wu Huai-Zhi(吴怀志), Yang Zhen-Biao(杨贞标), and Zheng Shi-Biao(郑仕标) . Quantum state swap for two trapped Rydberg atoms[J]. Chin. Phys. B, 2012, 21(4): 40305-040305.

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Quantum state swap for two trapped Rydberg atoms

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