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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 9600–9612

Quantum key distribution on a 10Gb/s WDM-PON

Iris Choi, Robert J. Young, and Paul D. Townsend  »View Author Affiliations


Optics Express, Vol. 18, Issue 9, pp. 9600-9612 (2010)
http://dx.doi.org/10.1364/OE.18.009600


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Abstract

We present the first demonstration of quantum key distribution (QKD) on a multi-user wavelength division multiplexed passive optical network (WDM-PON) with simultaneous, bidirectional 10Gb/s classical channel transmission. The C-Band QKD system operates at a clock rate of 10GHz and employs differential phase shift keying (DPSK). A dual feeder fiber and band filtering scheme is used to suppress classical to quantum channel cross-talk generated by spontaneous Raman scattering, which would otherwise prevent secure key distribution. Quantum keys were distributed to 4 users with negligible Raman cross-talk penalties. The mean QBER value for 4 users was 3.5% with a mean raw key distribution rate of 1.3Mb/s, which decreased to 696kb/s after temporal windowing to reduce inter-symbol interference due to single photon detector timing jitter.

© 2010 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(270.5568) Quantum optics : Quantum cryptography

ToC Category:
Quantum Optics

History
Original Manuscript: January 15, 2010
Revised Manuscript: March 12, 2010
Manuscript Accepted: March 29, 2010
Published: April 23, 2010

Citation
Iris Choi, Robert J. Young, and Paul D. Townsend, "Quantum key distribution on a 10Gb/s WDM-PON," Opt. Express 18, 9600-9612 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-9-9600


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