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Thermodynamic uncertainty relations from exchange fluctuation theorems

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arxiv 1904.07574 v2 pith:J5FZN4DO submitted 2019-04-16 quant-ph cond-mat.stat-mech

classification quant-phcond-mat.stat-mech
keywords thermodynamicboundscorrelationsexchangefluctuationheatplacequantities
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Thermodynamic uncertainty relations (TURs) place strict bounds on the fluctuations of thermodynamic quantities in terms of the associated entropy production. In this work we identify the tightest (and saturable) matrix-valued TUR that can be derived from the exchange fluctuation theorems describing the statistics of heat and particle flow between multiple systems. Our result holds for both quantum and classical systems, undergoing general non-Markovian and non-stationary processes. Moreover, it provides bounds not only for the variances, but also for the correlations between thermodynamic quantities. To demonstrate the relevance of TURs to the design of nanoscale machines, we consider the operation of a two-qubit SWAP engine undergoing an Otto cycle and show how our results can be used to place strict bounds on the correlations between heat and work.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The role of correlations in a sequence of quantum observations on empirical measures

    quant-ph 2024-11 conditional novelty 6.0 of 10

    For general sequential quantum measurements, the paper derives asymptotic covariance matrices of empirical distributions of outcome substrings and a relative-entropy measure of the influence of correlations.

  2. Thermodynamics from indistinguishability: mitigating and amplifying the effects of the bath

    quant-ph 2019-08 conditional novelty 6.0 of 10

    Collective bath coupling lets spin ensembles reach non-thermal steady states whose energy, entropy, and free-energy changes are mitigated or amplified, with entropy production reduced by up to a factor of the ensemble size.

  3. Information geometry, trade-off relations, and generalized Glansdorff-Prigogine criterion for stability

    cond-mat.stat-mech 2019-08 reject novelty 4.0 of 10

    The paper proposes a Fisher-information-based stability criterion for master equations, but the central example is undermined by an algebraic sign error.

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