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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Dynamics of nonequilibrium thermal entanglement
Physical Review A - Atomic, Molecular, and Optical Physics, Volume 78, No. 6, Article 062301, Year 2008
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Description
The dynamics of a simple spin chain (two spins) coupled to bosonic baths at different temperatures is studied. The analytical solution for the reduced density matrix of the system is found. The dynamics and temperature dependence of spin-spin entanglement is analyzed. It is shown that the system converges to a steady state. If the energy levels of the two spins are different, the steady-state concurrence assumes its maximum at unequal bath temperatures. It is found that a difference in local energy levels can make the steady-state entanglement more stable against high temperatures. © 2008 The American Physical Society.
Authors & Co-Authors
Sinayskiy, Ilya
South Africa, Durban
University of Kwazulu-natal
Petruccione, Francesco
South Africa, Durban
University of Kwazulu-natal
Burgarth, Daniel
United Kingdom, Oxford
University of Oxford
Statistics
Citations: 71
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1103/PhysRevA.78.062301
ISSN:
10502947
e-ISSN:
10941622