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A note on one-way quantum deficit and quantum discord.
- Source :
-
Quantum Information Processing . Jan2016, Vol. 15 Issue 1, p279-289. 11p. - Publication Year :
- 2016
-
Abstract
- One-way quantum deficit and quantum discord are two important measures of quantum correlations. We revisit the relationship between them in two-qubit systems. We investigate the conditions that both one-way quantum deficit and quantum discord have the same optimal measurement ensembles, and demonstrate that one-way quantum deficit can be derived from the quantum discord for a class of X states. Moreover, we give an explicit relation between one-way quantum deficit and entanglement of formation. We show that under phase damping channel both one-way quantum deficit and quantum discord evolve exactly in the same way for four parameter X states. Some examples are presented in details. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MEASUREMENT errors
*WORK measurement
*METROLOGY
*ENGINEERING
*QUANTUM theory
Subjects
Details
- Language :
- English
- ISSN :
- 15700755
- Volume :
- 15
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Quantum Information Processing
- Publication Type :
- Academic Journal
- Accession number :
- 112154530
- Full Text :
- https://doi.org/10.1007/s11128-015-1180-0