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Distributed CNOT gate via quantum Zeno dynamics

Source: J. Opt. Soc. Am. B 26, 2440 (2010); doi:10.1364/JOSAB.26.002440

Published 24 November 2009

KEYWORDS and PACS
Keywords
PACS
  • 42.79.Ta
    Optical computers, logic elements, interconnects, switches; neural networks
  • 42.50.-p
    Quantum optics
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 32.80.-t
    Photoionization and excitation of atoms
  • YEAR: 2009
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef OSA
Xiao-Qiang Shao,1 Hong-Fu Wang,1 Li Chen,2 Shou Zhang,1,2 Yong-Fang Zhao,1 and Kyu-Hwang Yeon3
1Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
2Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China
3BK21 Program Physics & Department of Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, South Korea
We show how the quantum Zeno effect can be exploited to implement the CNOT gate in two separated cavities with two atomic four-level tripod systems. In respective subspaces of the total Hilbert space, the evolution of the quantum system exhibits different dynamical properties due to the continuous coupling between atoms and cavities. The strictly numerical simulation reveals that a high average gate fidelity can be obtained in the presence of decoherence. ©2009 Optical Society of America
History: Received 5 June 2009; revised 22 July 2009; accepted 14 November 2009; published 24 November 2009
Permalink: http://dx.doi.org/10.1364/JOSAB.26.002440

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