Quantum state swap for two trapped Rydberg atoms

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

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.

Keywords: neutral atom swap gate Rydberg blockade

Received: 06 May 2011
Revised: 05 December 2011
Accepted manuscript online:

PACS:	03.67.-a	(Quantum information)
	32.80.Ee	(Rydberg states)
	42.50.Dv	(Quantum state engineering and measurements)

Fund: 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)

Corresponding Authors: Wu Huai-Zhi, E-mail:huaizhi.wu@fzu.edu.cn
E-mail: huaizhi.wu@fzu.edu.cn

Cite this article:

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 2012 Chin. Phys. B 21 040305

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