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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 2031–2033

Experimental demonstration of subcarrier multiplexed quantum key distribution system

José Mora, Antonio Ruiz-Alba, Waldimar Amaya, Alfonso Martínez, Víctor García-Muñoz, David Calvo, and José Capmany  »View Author Affiliations


Optics Letters, Vol. 37, Issue 11, pp. 2031-2033 (2012)
http://dx.doi.org/10.1364/OL.37.002031


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Abstract

We provide, to our knowledge, the first experimental demonstration of the feasibility of sending several parallel keys by exploiting the technique of subcarrier multiplexing (SCM) widely employed in microwave photonics. This approach brings several advantages such as high spectral efficiency compatible with the actual secure key rates, the sharing of the optical fainted pulse by all the quantum multiplexed channels reducing the system complexity, and the possibility of upgrading with wavelength division multiplexing in a two-tier scheme, to increase the number of parallel keys. Two independent quantum SCM channels featuring a sifted key rate of 10Kb/s/channel over a link with quantum bit error rate <2% is reported.

© 2012 Optical Society of America

OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(270.5568) Quantum optics : Quantum cryptography

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 2, 2012
Revised Manuscript: March 31, 2012
Manuscript Accepted: April 13, 2012
Published: May 30, 2012

Citation
José Mora, Antonio Ruiz-Alba, Waldimar Amaya, Alfonso Martínez, Víctor García-Muñoz, David Calvo, and José Capmany, "Experimental demonstration of subcarrier multiplexed quantum key distribution system," Opt. Lett. 37, 2031-2033 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-2031

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