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Fluctuating work in coherent quantum systems: proposals and limitations

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arxiv 1805.10096 v2 pith:33WXHURO submitted 2018-05-25 quant-ph cond-mat.stat-mech

classification quant-phcond-mat.stat-mech
keywords quantumthermodynamicworkdiscusslimitationsphenomenaproposalsthermodynamics
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One of the most important goals in quantum thermodynamics is to demonstrate advantages of thermodynamic protocols over their classical counterparts. For that, it is necessary to (i) develop theoretical tools and experimental set-ups to deal with quantum coherence in thermodynamic contexts, and to (ii) elucidate which properties are genuinely quantum in a thermodynamic process. In this short review, we discuss proposals to define and measure work fluctuations that allow to capture quantum interference phenomena. We also discuss fundamental limitations arising due to measurement back-action, as well as connections between work distributions and quantum contextuality. We hope the different results summarised here motivate further research on the role of quantum phenomena in thermodynamics.

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  1. Path integral approach to the calculation of the characteristic function of work

    cond-mat.stat-mech 2019-08 conditional novelty 5.0 of 10

    For a driven harmonic oscillator and an expanding piston, the characteristic function of work is derived with path integrals and proven equivalent to Schrödinger-based results.

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