Optical amplifier-powered quantum optical amplification

Published 16 May 2011 in quant-ph | (1105.3132v1)

Abstract: I show that an optical amplifier, when combined with photon subtraction, can be used for quantum state amplification, adding noise at a level below the standard minimum. The device could be used to significantly decrease the probability of incorrectly identifying coherent states chosen from a finite set.

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John Jeffers

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