Quantum hypothesis testing for quantum Gaussian states: Quantum analogues of chi-square, t and F tests

Details Quantum hypothesis testing for quantum Gaussian states: Quantum analogues of chi-square, t and F tests Quantum hypothesis testing for quantum Gaussian states: Quantum analogues of chi-square, t and F tests

2011-10-28

arxiv.org/abs/1110.6255v1

Physics

Quantum Physics

34 pages, 3 figures

Scientific paper

We treat quantum counterparts of testing problems whose optimal tests are given by chi-square, t and F tests. These quantum counterparts are formulated as quantum hypothesis testing problems concerning quantum Gaussian states families, and contain disturbance parameters, which have group symmetry. Quantum Hunt-Stein Theorem removes a part of these disturbance parameters, but other types of difficulty still remain. In order to remove them, combining quantum Hunt-Stein theorem and other reduction methods, we establish a general reduction theorem that reduces a complicated quantum hypothesis testing problem to a fundamental quantum hypothesis testing problem. Using these methods, we derive quantum counterparts of chi-square, t and F tests as optimal tests in the respective settings.

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