Long-distance quantum communications with superactivated Gaussian optical quantum channels

Gyongyosi, Laszlo; Imre, Sandor

doi:doi:10.1117/1.OE.51.1.015003

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Optical Engineering / Volume 51 / Issue 1 / Fiber Optics and Optical Communication

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Long-distance quantum communications with superactivated Gaussian optical quantum channels

Opt. Eng. 51, 015003 (Feb 06, 2012); http://dx.doi.org/10.1117/1.OE.51.1.015003

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Abstract

References (66)

Laszlo Gyongyosi and Sandor Imre

Budapest University of Technology and Economics, Department of Telecommunications, Magyar tudosok krt. 2H-1111 Budapest, Hungary

The superactivation of zero-capacity optical quantum channels makes it possible to use two zero-capacity optical quantum channels, with a positive joint capacity at the output. Here we show, that noisy Gaussian quantum channels with the help of entanglement and coherent optical devices, can be used to transmit quantum information perfectly. It will be demonstrated that using the superactivation effect, it is possible to develop efficient quantum repeaters with the elimination of the very inefficient and expensive purification process.

History

Received Aug 15, 2011
Accepted Nov 18, 2011
Revised Nov 18, 2011
Published online Feb 06, 2012

Digital Object Identifier

http://dx.doi.org/10.1117/1.OE.51.1.015003

Citation

Laszlo Gyongyosi and Sandor Imre, "Long-distance quantum communications with superactivated Gaussian optical quantum channels", Opt. Eng. 51, 015003 (Feb 06, 2012); http://dx.doi.org/10.1117/1.OE.51.1.015003