Dynamics of nonequilibrium thermal entanglement

Ilya Sinaysky, Francesco Petruccione, Daniel Burgarth

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

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.
Original languageEnglish
Article number062301
Pages (from-to)062301-1-062301-5
Number of pages5
JournalPhysical Review A
Volume78
Issue number6
DOIs
Publication statusPublished - 2008
Externally publishedYes

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