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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 12 — Jun. 15, 2006
  • pp: 1905–1907

Generation of high-purity telecom-band entangled photon pairs in dispersion-shifted fiber

Kim Fook Lee, Jun Chen, Chuang Liang, Xiaoying Li, Paul L. Voss, and Prem Kumar  »View Author Affiliations


Optics Letters, Vol. 31, Issue 12, pp. 1905-1907 (2006)
http://dx.doi.org/10.1364/OL.31.001905


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Abstract

We study the purity of correlated photon pairs generated in a dispersion-shifted fiber at various temperatures. The ratio of coincidence to accidental-coincidence counts greater than 100 can be obtained as the fiber is cooled to liquid-nitrogen temperature ( 77 K ) . We then generate polarization-entangled photon pairs by using a compact counterpropagating scheme. Two-photon interference with visibility > 98 % and Bell’s inequality violation by > 8 standard deviations of measurement uncertainty are observed at 77 K , without subtracting the accidental-coincidence counts due to background Raman photons.

© 2006 Optical Society of America

OCIS Codes
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.0270) Quantum optics : Quantum optics

ToC Category:
Quantum Optics

History
Original Manuscript: February 24, 2006
Revised Manuscript: March 20, 2006
Manuscript Accepted: March 23, 2006

Citation
Kim Fook Lee, Jun Chen, Chuang Liang, Xiaoying Li, Paul L. Voss, and Prem Kumar, "Generation of high-purity telecom-band entangled photon pairs in dispersion-shifted fiber," Opt. Lett. 31, 1905-1907 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-12-1905

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