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Competition between quantum correlations in the quantum-memory-assisted entropic uncertainty relation.

Authors :
Ming-Liang Hu
Heng Fan
Source :
Physical Review A: Atomic, Molecular & Optical Physics. Feb2013, Vol. 87 Issue 2-A, p022314-1-022314-5. 5p.
Publication Year :
2013

Abstract

With the aid of a quantum memory, the uncertainty about the measurement outcomes of two incompatible observables of a quantum system can be reduced. We investigate this measurement uncertainty bound by considering an additional quantum system connected with both the quantum memory and the measured quantum system. We find that the reduction of the uncertainty bound induced by a quantum memory, on the other hand, implies it is increasing for a third participant. We also show that the properties of the uncertainty bound can be viewed from perspectives of both quantum and classical correlations, in particular, that the behavior of the uncertainty bound is a result of competitions of various correlations between different parties. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10502947
Volume :
87
Issue :
2-A
Database :
Academic Search Index
Journal :
Physical Review A: Atomic, Molecular & Optical Physics
Publication Type :
Periodical
Accession number :
86171819
Full Text :
https://doi.org/10.1103/PhysRevA.87.022314