Optimal Work Extraction and Thermodynamics of Quantum Measurements and Correlations

Manzano, Gonzalo; Plastina, Francesco; Zambrini, Roberta

doi:10.1103/physrevlett.121.120602

Cited by 98 publications

(62 citation statements)

References 60 publications

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“…There has been much theoretical progress on understanding the role of entanglement for work extraction (see, e.g., Refs. [132][133][134][135][136][137]), mostly, however, for extracting work in idealized protocols. To the best of the author's knowlegde, a realizable and continuously working heat engine using quantum entanglement has not yet been presented.…”

Section: Entanglementmentioning

confidence: 99%

Operational approach to quantum stochastic thermodynamics

Strasberg

2019

Phys. Rev. E

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We set up a framework for quantum stochastic thermodynamics based solely on experimentally controllable, but otherwise arbitrary interventions at discrete times. Using standard assumptions about the system-bath dynamics and insights from the repeated interaction framework, we define internal energy, heat, work and entropy at the trajectory level. The validity of the first law (at the trajectory level) and the second law (on average) is established. The theory naturally allows to treat incomplete information and it is able to smoothly interpolate between a trajectory based and ensemble level description. We use our theory to compute the thermodynamic efficiency of recent experiments reporting on the stabilization of photon number states using real-time quantum feedback control. Special attention is also payed to limiting cases of our general theory, where we recover or contrast it with previous results. We point out various interesting problems, which the theory is able to address rigorously, such as the detection of quantum effects in thermodynamics. arXiv:1810.00698v4 [quant-ph]

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Section: Entanglementmentioning

confidence: 99%

Operational approach to quantum stochastic thermodynamics

Strasberg

2019

Phys. Rev. E

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“…In order to give a map describing the quasi-static process, we extend the one developed in Ref. [50], where an isothermal processes for the case of a thermal reservoir were constructed by alternating infinitesimal adiabatic and isochoric steps (see also [54]). Let's assume the following sequence of CPTP maps…”

Section: Appendix B: Reversible Protocol With Cptp Mapsmentioning

confidence: 99%

Squeezed thermal reservoir as a generalized equilibrium reservoir

Manzano¹

2018

Phys. Rev. E

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We explore the perspective of considering the squeezed thermal reservoir as an equilibrium reservoir in a generalized Gibbs ensemble with two non-commuting conserved quantities. We outline the main properties of such a reservoir in terms of the exchange of energy, both heat and work, and entropy, giving some key examples to clarify its physical interpretation. This allows for a correct and insightful interpretation of all thermodynamical features of the squeezed thermal reservoir, as well as other similar non-thermal reservoirs, including the characterization of reversibility and the first and second laws of thermodynamics.

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“…Several works address the influence of coherence [12,14,15,27,28] and correlations [7,19,[29][30][31][32][33][34][35][36][37][38] in thermodynamic transformations in different scenarios. In * cerisola@df.uba.ar † augusto@df.uba.ar general, the creation of correlations is associated to some energetic cost and strategies to optimally extract work from them have been put forward [33][34][35][36][37][38]. On the other hand, it has been demonstrated that in the single-shot regime, by allowing auxiliary correlated catalytic systems [7] or correlations with catalytic systems [19], it is possible to enlarge the set of achievable transformations.…”

Section: Introductionmentioning

confidence: 99%

Correlations as a resource in quantum thermodynamics

2019

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The presence of correlations in physical systems can be a valuable resource for many quantum information tasks. They are also relevant in thermodynamic transformations, and their creation is usually associated to some energetic cost. In this work, we study the role of correlations in the thermodynamic process of state formation in the single-shot regime, and find that correlations can also be viewed as a resource. First, we show that the energetic cost of creating multiple copies of a given state can be reduced by allowing correlations in the final state. We obtain the minimum cost for every finite number of subsystems, and then we show that this feature is not restricted to the case of copies. More generally, we demonstrate that in the asymptotic limit, by allowing a logarithmic amount of correlations, we can recover standard results where the free energy quantifies this minimum cost.

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Optimal Work Extraction and Thermodynamics of Quantum Measurements and Correlations

Cited by 98 publications

References 60 publications

Operational approach to quantum stochastic thermodynamics

Operational approach to quantum stochastic thermodynamics

Squeezed thermal reservoir as a generalized equilibrium reservoir

Correlations as a resource in quantum thermodynamics

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