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Optical Engineering

Long-distance quantum communications with superactivated Gaussian optical quantum channels
Author(s): Laszlo Gyongyosi; Sandor Imre
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Paper Abstract

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.

Paper Details

Date Published: 6 February 2012
PDF: 17 pages
Opt. Eng. 51(1) 015003 doi: 10.1117/1.OE.51.1.015003
Published in: Optical Engineering Volume 51, Issue 1
Show Author Affiliations
Laszlo Gyongyosi, Budapest Univ. of Technology and Economics (Hungary)
Sandor Imre, Budapest Univ. of Technology and Economics (Hungary)

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