Long-distance quantum communications with superactivated Gaussian optical quantum channels

Laszlo Gyongyosi; Sandor Imre

doi:10.1117/1.OE.51.1.015003

6 February 2012 Long-distance quantum communications with superactivated Gaussian optical quantum channels

Laszlo Gyongyosi, Sandor Imre

Author Affiliations +

Optical Engineering, Vol. 51, Issue 1, 015003 (February 2012). https://doi.org/10.1117/1.OE.51.1.015003

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.

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Laszlo Gyongyosi and Sandor Imre "Long-distance quantum communications with superactivated Gaussian optical quantum channels," Optical Engineering 51(1), 015003 (6 February 2012). https://doi.org/10.1117/1.OE.51.1.015003

Published: 6 February 2012

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