Maximum-likelihood estimation of quantum measurement

Details Maximum-likelihood estimation of quantum measurement Maximum-likelihood estimation of quantum measurement

2001-01-05

arxiv.org/abs/quant-ph/0101027v2

Phys. Rev. A 64, 024102 (2001).

Physics

Quantum Physics

4 pages, REVTeX

Scientific paper

10.1103/PhysRevA.64.024102

Maximum likelihood estimation is applied to the determination of an unknown quantum measurement. The measuring apparatus performs measurements on many different quantum states and the positive operator-valued measures governing the measurement statistics are then inferred from the collected data via Maximum-likelihood principle. In contrast to the procedures based on linear inversion, our approach always provides physically sensible result. We illustrate the method on the case of Stern-Gerlach apparatus.

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