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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 11 — May. 28, 2007
  • pp: 6926–6933

Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

S. Sauge, M. Swillo, S. Albert-Seifried, G. B. Xavier, J. Waldebäck, M. Tengner, D. Ljunggren, and A. Karlsson  »View Author Affiliations


Optics Express, Vol. 15, Issue 11, pp. 6926-6933 (2007)
http://dx.doi.org/10.1364/OE.15.006926


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Abstract

We present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm at a maximum rate of 1.2 × 106 s-1 THz-1 mW-1 after coupling to single-mode fiber. The quantum channel at 1555 nm and the synchronization signal gating the single photon detector are multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This implementation makes quantum communication applications compatible with current high-speed optical networks.

© 2007 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(270.0270) Quantum optics : Quantum optics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 26, 2007
Revised Manuscript: May 16, 2007
Manuscript Accepted: May 16, 2007
Published: May 21, 2007

Citation
S. Sauge, M. Swillo, S. Albert-Seifried, G. B. Xavier, J. Waldebäck, M. Tengner, D. Ljunggren, and A. Karlsson, "Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks," Opt. Express 15, 6926-6933 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-11-6926


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