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Quantum Thermodynamics

Noise-induced Renyi entropy flow of a quantum heat engine

arXiv
Authors: Mohammad H. Ansari

Year

2015

Paper ID

4524

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

Entropy is one of the central quantities in thermodynamics, whose flow between two systems determines the statistics of energy transfers. In quantum systems entropy is non-linear in density matrix whose time evolution is cumbersome. Using recent developments in the Keldysh formalism for the evolution of nonlinear quantum information measures (Phys. Rev. B 91, 174307 (2015)), we study the flow of von Neumann and Renyi entropies in a generic four-level quantum system that is weakly coupled to equilibrium heat engines. We show that noise-induced coherence has significant influence on the entropy flow of the quantum heat engine. We determine analytical optimization of couplings for the purpose of designing optimal artificial energy transfer systems.

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  • This paper contributes to the Quantum Thermodynamics research area in the Quantum Articles archive.
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  • Entropy is one of the central quantities in thermodynamics, whose flow between two systems determines the statistics of energy transfers.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1512.06288 [2] arXiv https://arxiv.org/abs/1512.06288 [3] Publisher https://arxiv.org/abs/1512.06288

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