How many photons are needed to distinguish two transparencies?

Details How many photons are needed to distinguish two transparencies? How many photons are needed to distinguish two transparencies?

2001-05-21

arxiv.org/abs/quant-ph/0105098v1

Phys. Rev. A 65, 022110 (2002)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.65.022110

We give a bound on the minimum number of photons that must be absorbed by any
quantum protocol to distinguish between two transparencies. We show how a
quantum Zeno method in which the angle of rotation is varied at each iteration
can attain this bound in certain situations.

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