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Fidelity and trace-norm distances for quantifying coherence.
- Source :
-
Physical Review A: Atomic, Molecular & Optical Physics . Apr2015, Vol. 91 Issue 4-A, p1-6. 6p. - Publication Year :
- 2015
-
Abstract
- We investigate the coherence measures induced by fidelity and trace norm, based on the coherence quantification recently proposed by Baumgratz et al. [T. Baumgratz, M. Cramer, and M. B. Plenio, Phys. Rev. Lett. 113, 140401 (2014)]. We show that the fidelity of coherence does not in general satisfy the monotonicity requirement as a measure of coherence under the subselection of the measurement condition. We find that the trace norm of coherence can act as a measure of coherence for qubits and some special class of qutrits with some restrictions on the incoherent operators, while the general case needs to be explored further. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10502947
- Volume :
- 91
- Issue :
- 4-A
- Database :
- Academic Search Index
- Journal :
- Physical Review A: Atomic, Molecular & Optical Physics
- Publication Type :
- Periodical
- Accession number :
- 102774976
- Full Text :
- https://doi.org/10.1103/PhysRevA.91.042120