Phase measurements with weak reference pulses

Details Phase measurements with weak reference pulses Phase measurements with weak reference pulses

2002-07-24

arxiv.org/abs/quant-ph/0207142v1

Phys. Rev. A 66, 042308 (2002)

Physics

Quantum Physics

5 pages, 5 figures. I apologize for this boring paper

Scientific paper

10.1103/PhysRevA.66.042308

Quantum state discrimination for two coherent states with opposite phases as measured relative to a reference pulse is analyzed as functions of the intensities of both the signal states and of the reference pulse. This problem is relevant for Quantum Key Distribution with phase encoding. We consider both the optimum measurements and simple measurements that require only beamsplitters and photodetectors.

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