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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 4 — Apr. 1, 2008
  • pp: 668–673

Fiber-optic realization of anisotropic depolarizing quantum channels

Michał Karpiński, Czesław Radzewicz, and Konrad Banaszek  »View Author Affiliations


JOSA B, Vol. 25, Issue 4, pp. 668-673 (2008)
http://dx.doi.org/10.1364/JOSAB.25.000668


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Abstract

We employed an electrically driven polarization controller to implement anisotropic depolarizing quantum channels for the polarization state of single photons. The channels were characterized by means of ancilla-assisted quantum process tomography using polarization-entangled photons generated in the process of spontaneous parametric downconversion. The demonstrated depolarization method offers good repeatability, low cost, and compatibility with fiber-optic setups. It does not perturb the modal structure of single photons, and therefore can be used to verify experimentally protocols for managing decoherence effects based on multiphoton interference.

© 2008 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(260.5430) Physical optics : Polarization
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 26, 2007
Revised Manuscript: December 6, 2007
Manuscript Accepted: February 20, 2008
Published: March 31, 2008

Citation
Michał Karpiński, Czesław Radzewicz, and Konrad Banaszek, "Fiber-optic realization of anisotropic depolarizing quantum channels," J. Opt. Soc. Am. B 25, 668-673 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-4-668

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