How many photons are needed to distinguish two transparencies?
classification
🪐 quant-ph
keywords
bounddistinguishphotonsquantumtransparenciesabsorbedangleattain
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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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