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Unambiguous discrimination between linearly dependent equidistant states with multiple copies.
- Source :
-
Quantum Information Processing . Jul2018, Vol. 17 Issue 7, p1-1. 1p. - Publication Year :
- 2018
-
Abstract
- Linearly independent quantum states can be unambiguously discriminated, but linearly dependent ones cannot. For linearly dependent quantum states, however, if C copies of the single states are available, then they may form linearly independent states, and can be unambiguously discriminated. We consider unambiguous discrimination among Nā=āDā+ā1 linearly dependent states given that C copies are available and that the single copies span a D-dimensional space with equal inner products. The maximum unambiguous discrimination probability is derived for all C with equal a priori probabilities. For this classification of the linearly dependent equidistant states, our result shows that if C is even then adding a further copy fails to increase the maximum discrimination probability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15700755
- Volume :
- 17
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Quantum Information Processing
- Publication Type :
- Academic Journal
- Accession number :
- 130444048
- Full Text :
- https://doi.org/10.1007/s11128-018-1929-3