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Communications in Theoretical Physics

Effectiveness of Non-Markovian Methods for Quantum Discord Dynamics of Non-coupled Two-Qubit System*

Yong-Gang 勇刚 Huang 黄, Xiao-Yun Wang, Xuexian Yang, Ke Deng, Jinzhang Peng, Heping Zhao

Published Sep 1, 2018• 2 citations
Publisher

Abstract

Abstract The dissipative dynamics of non-coupled two qubits interacting with independent reservoir is studied by solving the non-Markovian master equation. In order to examine the effectiveness of the Nakajima-Zwanzig and time-convolutionless master equations in the description of quantum correlation dynamics, different coupled regimes are investigated. The comparison between the above two master equation methods for investigating the dynamics of quantum discord is also made. Finally, we further confirm that the two master equations should be applied in different regimes of qubits coupled to their reservoirs, respectively.

DOI
10.1088/0253-6102/70/3/268

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