Optical amplifier-powered quantum optical amplification
John Jeffers
TL;DR
This paper demonstrates that combining optical amplification with photon subtraction enables quantum state amplification with noise below the standard limit, improving the accuracy of identifying coherent states.
Contribution
It introduces a novel method of quantum amplification that reduces noise below the standard quantum limit using optical amplifiers and photon subtraction.
Findings
Noise added is below the standard quantum limit.
Enhanced discrimination of coherent states.
Potential for improved quantum communication protocols.
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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