Ergotropy from quantum and classical correlations
- URL: http://arxiv.org/abs/2102.13606v2
- Date: Wed, 22 Dec 2021 14:54:00 GMT
- Title: Ergotropy from quantum and classical correlations
- Authors: Akram Touil, Bar{\i}\c{s} \c{C}akmak, Sebastian Deffner
- Abstract summary: We show that the ergotropy can be expressed as a function of the quantum mutual information.
We analyze bipartite quantum systems with locally thermal states.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: It is an established fact that quantum coherences have thermodynamic value.
The natural question arises, whether other genuine quantum properties such as
entanglement can also be exploited to extract thermodynamic work. In the
present analysis, we show that the ergotropy can be expressed as a function of
the quantum mutual information, which demonstrates the contributions to the
extractable work from classical and quantum correlations. More specifically, we
analyze bipartite quantum systems with locally thermal states, such that the
only contribution to the ergotropy originates in the correlations. Our findings
are illustrated for a two-qubit system collectively coupled to a thermal bath.
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