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Article: Findings from G. Kimura et al in physics reported.
- Article from:
- Physics Week
- Article date:
- August 11, 2009
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According to recent research from Tokyo, Japan, "We investigate a state discrimination problem in operationally the most general framework to use a probability, including both classical, quantum theories, and more."
"In this wide framework, introducing closely related family of ensembles (which we call a Helstrom family of ensembles) with the problem, we provide a geometrical method to find an optimal measurement for state discrimination by means of Bayesian strategy. We illustrate our method in two-level quantum systems and in a probabilistic model with square-state space to reproduce, e.g., the optimal success probabilities for binary state discrimination and N ...