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arXiv · 1602.00474

Finite size bath in qubit thermodynamics

J. P. Pekola·S. Suomela·Y. M. Galperin
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Abstract

We discuss a qubit weakly coupled to a finite-size heat bath (calorimeter) from the point of view of quantum thermodynamics. The energy deposited to this environment together with the state of the qubit provides a basis to analyze the heat and work statistics of this closed combined system. We present results on two representative models, where the bath is composed of two-level systems or harmonic oscillators, respectively. Finally, we derive results for an open quantum system composed of the above qubit plus finite-size bath, but now the latter is coupled to a practically infinite bath of the same nature of oscillators or two-level systems.

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J. P. Pekola, S. Suomela, Y. M. Galperin. 2016-02-01. Finite size bath in qubit thermodynamics. https://doi.org/10.1007/s10909-016-1618-5

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