Physics – Quantum Physics
Scientific paper
2011-05-16
Phys. Rev. A 83, 053818 (2011)
Physics
Quantum Physics
5 pages, 5 figures
Scientific paper
10.1103/PhysRevA.83.053818
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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