Optimal minimum-cost quantum measurements for imperfect detection

Details Optimal minimum-cost quantum measurements for imperfect detection Optimal minimum-cost quantum measurements for imperfect detection

2012-01-01

arxiv.org/abs/1201.0387v1

Physics

Quantum Physics

5 pages

Scientific paper

Knowledge of optimal quantum measurements is important for a wide range of situations, including quantum communication and quantum metrology. Quantum measurements are usually optimised with an ideal experimental realisation in mind. Real devices and detectors are, however, imperfect. This has to be taken into account when optimising quantum measurements. In this paper, we derive the optimal minimum-cost and minimum-error measurements for a general model of imperfect detection.

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