Search

MiS Preprint Repository

Delve into the future of research at MiS with our preprint repository. Our scientists are making groundbreaking discoveries and sharing their latest findings before they are published. Explore repository to stay up-to-date on the newest developments and breakthroughs.

MiS Preprint
57/2011

Lower Bound of Concurrence Based on Positive Maps

Xiao-Sheng Li, Xiu-Hong Gao and Shao-Ming Fei

Abstract

We study the concurrence of arbitrary dimensional bipartite quantum systems. An explicit analytical lower bound of concurrence is obtained, which detects entanglement for some quantum states better than some well-known separability criteria, and improves the lower bounds such as from the PPT, realignment criteria and the Breuer's entanglement witness.

Received:
Sep 3, 2011
Published:
Sep 5, 2011
PACS:
03.67.Mn, 03.67.-a, 02.20.Hj, 03.65.-w

Related publications

inJournal
2011 Repository Open Access
Xiao-Sheng Li, Xiu-Hong Gao and Shao-Ming Fei

Lower bound of concurrence based on positive maps

In: Physical review / A, 83 (2011) 3, pp. 034303-034303