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Applied Physics Letters / Volume 97 / Issue 3 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 97, 031117 (2010); http://dx.doi.org/10.1063/1.3460920 (3 pages)

Quantum entanglement distribution with 810 nm photons through telecom fibers

E. Meyer-Scott1, H. Hübel1, A. Fedrizzi2, C. Erven1, G. Weihs1,3, and T. Jennewein1

1Institute for Quantum Computing, University of Waterloo, 200 University Avenue W, Waterloo N2L 3G1, Canada
2Department of Physics and Centre for Quantum Computer Technology, University of Queensland, Brisbane QLD 4072, Australia
3Institute für Experimentalphysik, Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria

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(Received 25 May 2010; accepted 15 June 2010; published online 22 July 2010)

We demonstrate the distribution of polarization entangled photons of wavelength 810 nm through standard telecom fibers. This technique allows quantum communication protocols to be performed over established fiber infrastructure, and makes use of the smaller and better performing setups available around 800 nm, as compared to those which use telecom wavelengths around 1550 nm. We examine the excitation and subsequent quenching of higher-order spatial modes in telecom fibers up to 6 km in length, and perform a distribution of high quality entanglement (visibility 95.6%). Finally, we demonstrate quantum key distribution using entangled 810 nm photons over a 4.4 km long installed telecom fiber link.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

optical fibre communication, protocols, quantum communication, quantum cryptography, quantum entanglement, radiation quenching

PACS

  • 03.67.Hk

    Quantum communication

  • 03.67.Bg

    Entanglement production and manipulation

  • 03.67.Ac

    Quantum algorithms, protocols, and simulations

  • 03.67.Dd

    Quantum cryptography and communication security

  • 42.79.Sz

    Optical communication systems, multiplexers, and demultiplexers

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3460920

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, Rev. Mod. Phys. 74, 145 (2002).

    C. H. Bennett, G. Brassard, and N. D. Mermin, Phys. Rev. Lett. 68, 557 (1992).

    X. Ma, C. -H. F. Fung, and H. -K. Lo, Phys. Rev. A 76, 012307 (2007).


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