Nonequilibrium thermal entanglement for a three spin chain
Abstract
The dynamics of a chain of three spins coupled at both ends to separate bosonic baths at different temperatures is studied. An exact analytical solution of the master equation in the BornMarkov approximation for the reduced density matrix of the chain is constructed. It is shown that for long times the reduced density matrix converges to the nonequilibrium steady state. Dynamical and steady state properties of the concurrence between the first and the last spin are studied.
 Publication:

Physics Letters A
 Pub Date:
 August 2011
 DOI:
 10.1016/j.physleta.2011.07.010
 arXiv:
 arXiv:1401.2302
 Bibcode:
 2011PhLA..375.3157P
 Keywords:

 Quantum Physics
 EPrint:
 19 pages, 4 figures