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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 4 — Apr. 1, 2014
  • pp: 697–703

One-step implementation of the genuine Fredkin gate in high-Q coupled three-cavity arrays

Xiao-Qiang Shao, Tai-Yu Zheng, Xun-Li Feng, C. H. Oh, and Shou Zhang  »View Author Affiliations


JOSA B, Vol. 31, Issue 4, pp. 697-703 (2014)
http://dx.doi.org/10.1364/JOSAB.31.000697


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Abstract

We present two efficient methods for implementing the Fredkin gate with atoms separately trapped in an array of three high-Q coupled cavities. The first proposal is based on the resonant dynamics, which leads to a fast resonant interaction in a certain subspace while leaving others unchanged, and the second one utilizes a dispersive interaction such that an effective long-distance dipole–dipole interaction between two distributed target qubits is achieved by a virtually excited process. Both schemes can achieve the standard form of the Fredkin gate in a single step without any subsequent single-qubit operation. The effects of decoherence on the performance of the gate are also analyzed in virtue of the master equation, and strictly numerical simulation reveals that the average fidelity of the quantum gate is high.

© 2014 Optical Society of America

OCIS Codes
(020.5580) Atomic and molecular physics : Quantum electrodynamics
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: October 30, 2013
Revised Manuscript: January 15, 2014
Manuscript Accepted: January 25, 2014
Published: March 5, 2014

Citation
Xiao-Qiang Shao, Tai-Yu Zheng, Xun-Li Feng, C. H. Oh, and Shou Zhang, "One-step implementation of the genuine Fredkin gate in high-Q coupled three-cavity arrays," J. Opt. Soc. Am. B 31, 697-703 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-4-697

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