STATISTICAL-INFERENCE, DISTINGUISHABILITY OF QUANTUM STATES, AND QUANTUM ENTANGLEMENT

Authors
VEDRAL V PLENIO MB JACOBS K KNIGHT PL
Citation
V. Vedral et al., STATISTICAL-INFERENCE, DISTINGUISHABILITY OF QUANTUM STATES, AND QUANTUM ENTANGLEMENT, Physical review. A, 56(6), 1997, pp. 4452-4455
Citations number
20
Journal title
Physical review. A → ACNP
ISSN journal
10502947
Volume
56
Issue
6
Year of publication
1997
Pages
4452 - 4455
Database
ISI
SICI code
1050-2947(1997)56:6<4452:SDOQSA>2.0.ZU;2-E
Abstract
We argue from the point of view of statistical inference that the quan tum relative entropy is a good measure for distinguishing between two quantum states (or two classes of quantum states) described by density matrices. We extend this notion to describe the amount of entanglemen t between two quantum systems from a statistical point of view. Our me asure is independent of the number of entangled systems and their dime nsionality. [S1050-2947(97)01112-8].