2013
DOI: 10.5488/cmp.16.34001
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Bath dynamics in an exactly solvable qubit model with initial qubit-environment correlations

Abstract: We study the bath dynamics in the dephasing model of a two-state quantum system (qubit) coupled to an environment of harmonic oscillators. This model was shown [Morozov et al., Phys. Rev. A, 2012 85, 022101] to admit the analytic solution for the qubit and environment dynamics. Using this solution, we derive the exact expression for the bath reduced density matrix in the presence of initial qubit-environment correlations. We obtain the non-equilibrium phonon distribution function and discuss in detail the time… Show more

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Cited by 14 publications
(31 citation statements)
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“…Consequently, in such initial configuration the qubit and thermal bath are correlated. Refer to [17,18,19,24,25,26,27,28,29] for details.…”
Section: Special Correlated Initial Conditionsmentioning
confidence: 99%
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“…Consequently, in such initial configuration the qubit and thermal bath are correlated. Refer to [17,18,19,24,25,26,27,28,29] for details.…”
Section: Special Correlated Initial Conditionsmentioning
confidence: 99%
“…The non-equilibrium energy of the bosonic bath is evaluated as the sum over the bosonic modes of the expectation values of the number of excitations [17,18,19],…”
Section: The Energy Of the Bosonic Bathmentioning
confidence: 99%
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“…Different paths have been followed in order to tackle the issue of initially correlated states between system and environment in special systems of physical interest2021222324. In particular great attention has been devoted to study the conditions under which a completely positive map can in some sense be introduced.…”
mentioning
confidence: 99%