Home | About Journal | Web Links | E-mail Alerts | RSS RSS Icon | Browse
Previous Article Next Article

Entanglement detection via tighter local uncertainty relations

Source: Phys. Rev. A 81, 012324 (2010); doi:10.1103/PhysRevA.81.012324

Published 25 January 2010

PACS
  • 03.67.Mn
    Entanglement measures, witnesses, and other characterizations (quantum information)
  • 03.65.Ta
    Foundations of quantum mechanics; measurement theory
  • 03.65.Ud
    Entanglement and quantum nonlocality
  • YEAR: 2010
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
Cheng-Jie Zhang,1 Hyunchul Nha,2 Yong-Sheng Zhang,1 and Guang-Can Guo1
1Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
2Department of Physics, Texas A&M University at Qatar, Doha, Qatar
We propose an entanglement criterion based on local uncertainty relations (LURs) in a stronger form than the original LUR criterion introduced by Hofmann and Takeuchi [H. F. Hofmann and S. Takeuchi, Phys. Rev. A 68, 032103 (2003)]. Using arbitrarily chosen operators {Âk} and {B-hat k} of subsystems A and B, the tighter LUR criterion, which may be used not only for discrete variables but also for continuous variables, can detect more entangled states than the original criterion. ©2010 The American Physical Society
History: Received 1 September 2009; published 25 January 2010
Permalink: http://link.aps.org/abstract/PRA/v81/e012324
ADVERTISEMENT