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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 4 — Apr. 1, 2008
  • pp: 504–512

Fifth-order nonlinearity and 3-qubit phase gate in a five-level tripod atomic system

Pengbo Li, Ying Gu, Lijun Wang, and Qihuang Gong  »View Author Affiliations

JOSA B, Vol. 25, Issue 4, pp. 504-512 (2008)

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We first investigate the nonlinear optical response of a five-level tripod atomic system in electromagnetically induced transparency and then propose a 3-qubit phase gate protocol based on the fifth-order nonlinearity. The cross-phase modulation among the three weak fields induced by the fifth-order nonlinearity in electromagnetically induced transparency can produce the phase shift of order π, which can be used to realize the 3-qubit polarization phase gate. This protocol should have potential applications in quantum information processing.

© 2008 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

Original Manuscript: October 23, 2007
Revised Manuscript: December 12, 2007
Manuscript Accepted: January 18, 2008
Published: March 20, 2008

Pengbo Li, Ying Gu, Lijun Wang, and Qihuang Gong, "Fifth-order nonlinearity and 3-qubit phase gate in a five-level tripod atomic system," J. Opt. Soc. Am. B 25, 504-512 (2008)

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