Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-05-29
HAIT J. Sci. Eng. 1, 573-585 (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
We review our recent results on short time approximations, with emphasis on applications for which the system-environment interactions involve a general non-Hermitian system operator and its conjugate. We evaluate the onset of decoherence at low temperatures in open quantum systems. The developed approach is complementary to Markovian approximations and appropriate for evaluation of quantum computing schemes. Example of a spin system coupled to a bosonic heat bath is discussed.
Privman Vladimir
Tolkunov Denis
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