Open AccessQuantum correlation for a central two-qubit system coupled to Ising chain
Author(s) -
Yang Yang,
An Min Wang
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.130305
Subject(s) - quantum discord , ising model , physics , quantum correlation , quantum , measure (data warehouse) , qubit , quantum mechanics , statistical physics , quantum dynamics , computer science , database
Studying quantum correlation dynamics of a central two-qubit system coupled to Ising chain model, we obtain that the evolution of quantum discord and geometric measure of quantum discord for the central atoms. We find that quantum correlation exists a sudden transition in the weak coupled interaction near the quantum critical point of Ising chain. Moreover, the evolution of geometric measure of quantum discord in invariant to some extent.