On the validity of non-Markovian master equation approaches for the entanglement dynamics of two-qubit systems
- Authors: Ferraro, E; Scala, M; Migliore, R; Napoli, A
- Publication year: 2010
- Type: Articolo in rivista (Articolo in rivista)
- Key words: Entanglement, Open quantum systems, Non-Markovian master equations
- OA Link: http://hdl.handle.net/10447/53715
Abstract
In the framework of the dissipative dynamics of coupled qubits interacting with independent reservoirs, a comparison between non-Markovian master equation techniques and an exact solution is presented here. We study various regimes in order to find the limits of validity of the Nakajima–Zwanzig and the time-convolutionless master equations in the description of the entanglement dynamics. A comparison between the performances of the concurrence and the negativity as entanglement measures for the system under study is also presented.