Unambiguous correct discrimination of linearly dependent states with multiple copies. (English) Zbl 1542.81050
Summary: In this paper, we investigate the unambiguous correct discrimination of three multi-copy quantum states with equal a priori probability. The measurement operators include the success operators and the correct operators. Using this scenario, we introduce the concept of the relative average correct probability, as a function of the average success probability. Based on the analysis of the relative average correct probability, the problem given in [A. Chefles, Phys. Rev. A (3) 64, No. 6, Article ID 062305, 6 p. (2001; doi:10.1103/PhysRevA.64.062305)] are solved completely.
MSC:
| 81P18 | Quantum state tomography, quantum state discrimination |
| 81P15 | Quantum measurement theory, state operations, state preparations |
Keywords:
quantum state discrimination; minimum error discrimination; unambiguous discrimination; unambiguous correct discriminationReferences:
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