In the analysis of quantum discord, the minimization of average entropy traditionally involved over orthogonal projec-tive measurements may be attained at more optimal decompositions by using the positive-operator-valued measure (POVM) measurements. Taking advantage of the quantum steering ellipsoid in ...
In this study, we investigate the dynamics of classical and quantum correlations for a two-qubit system in an XY spin-chain environment. Moreover, we focus on two coupling cases. We find that the quantum discord (QD) decay rates for the two cases differ in sudden change behavior and stron...
Master equation for two interacting qubits coupled to a thermal bath derived.Equation analytically solved without the RWA.Evolution of Concurrence, Discord... GL De?Ordi,A Vidiella-Barranco - 《Optics Communications》 被引量: 2发表: 2017年 Quantum Heat Transport of a Two-Qubit System: Interplay...