Optimum unambiguous discrimination between linearly independent symmetric states

1998/07/08 by Anthony Chefles, Stephen M. Barnett · 11 citations
Computer Science · Physics and Astronomy · #Orbital Angular Momentum in Optics #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1016/s0375-9601(98)00827-5

published as Phys.Lett. A250 (1998) 223-229 · 9 pages, 2 eps figures, submitted to Physics Letters A

arxiv created 1998/07/08 · openalex publication_date 1998/12/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

The quantum formalism permits one to discriminate sometimes between any set of linearly-independent pure states with certainty. We obtain the maximum probability with which a set of equally-likely, symmetric, linearly-independent states can be discriminated. The form of this bound is examined for symmetric coherent states of a harmonic oscillator or field mode.

Citations

• Unambiguous discrimination between linearly independent quantum states

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