Optimal distinction between non-orthogonal quantum states
- 28 August 1998
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 31 (34) , 7105-7111
- https://doi.org/10.1088/0305-4470/31/34/013
Abstract
Given a finite set of linearly independent quantum states, an observer who examines a single quantum system may sometimes identify its state with certainty. However, unless these quantum states are orthogonal, there is a finite probability of failure. A complete solution is given to the problem of optimal distinction of three states, having arbitrary prior probabilities and arbitrary detection values. A generalization to more than three states is outlined.Keywords
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