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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
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.
© 2012 Society of Photo-Optical Instrumentation Engineers
History
Received Aug 15, 2011
Accepted Nov 18, 2011
Revised Nov 18, 2011
Published online Feb 06, 2012
Accepted Nov 18, 2011
Revised Nov 18, 2011
Published online Feb 06, 2012
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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
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