Quantum thermodynamics of general quantum processes

Binder, Felix C.; Vinjanampathy, Sai; Modi, Kavan; Goold, John

doi:10.1103/physreve.91.032119

Cited by 105 publications

(122 citation statements)

References 36 publications

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“…(34). We note that these theorems are often implicitly assumed while discussing quantum thermodynamics from the standpoint of CPTP maps, see [98,100,101] for examples.…”

Section: Three Theorems Involving Cptp Mapsmentioning

confidence: 99%

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Quantum thermodynamics

Vinjanampathy¹,

Anders²

2016

Contemporary Physics

Self Cite

904

806

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Quantum thermodynamics is an emerging research field aiming to extend standard thermodynamics and non-equilibrium statistical physics to ensembles of sizes well below the thermodynamic limit, in non-equilibrium situations, and with the full inclusion of quantum effects. Fueled by experimental advances and the potential of future nanoscale applications this research effort is pursued by scientists with different backgrounds, including statistical physics, many-body theory, mesoscopic physics and quantum information theory, who bring various tools and methods to the field. A multitude of theoretical questions are being addressed ranging from issues of thermalisation of quantum systems and various definitions of "work", to the efficiency and power of quantum engines. This overview provides a perspective on a selection of these current trends accessible to postgraduate students and researchers alike.

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“…(34). We note that these theorems are often implicitly assumed while discussing quantum thermodynamics from the standpoint of CPTP maps, see [98,100,101] for examples.…”

Section: Three Theorems Involving Cptp Mapsmentioning

confidence: 99%

“…As was noted in the context of engines, the first law emerges naturally as a partitioning of the energy of the system in terms of heat and work. See [101] for a partitioning of internal energy change for CPTP processes. In the context of QTMs, for instance, this can be seen in Eq.…”

Section: Relationship To Laws Of Thermodynamicsmentioning

confidence: 99%

Quantum thermodynamics

Vinjanampathy¹,

Anders²

2016

Contemporary Physics

Self Cite

904

806

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“…For a study of the role of coherence in specific machines see [53,57]. For additional studies of coherence in quantum thermodynamics see [30,32,36,52,[60][61][62][63][64].…”

Section: Introductionmentioning

confidence: 99%

Coherence-Induced Reversibility and Collective Operation of Quantum Heat Machines via Coherence Recycling

Uzdin

2016

Phys. Rev. Applied

105

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Collective behavior where a set of elements interact and generate effects that are beyond the reach of the individual non interacting elements, are always of great interest in physics. Quantum collective effects that have no classical analogue are even more intriguing. In this work we show how to construct collective quantum heat machines and explore their performance boosts with respect to regular machines. Without interactions between the machines the individual units operate in a stochastic, non-quantum manner. The construction of the collective machine becomes possible by introducing two simple quantum operations: coherence extraction and coherence injection. Together these operations can harvest coherence from one engine and use it to boost the performance of a slightly different engine. For weakly driven engines we show that the collective work output scales quadratically with the number of engines rather than linearly. Eventually, the boost saturates and the scaling becomes linear. Nevertheless, even in saturation, work is still significantly boosted compared to individual operation. To study the reversibility of the collective machine we introduce the 'entropy pollution' measure. It is shown that there is a regime where the collective machine is N times more reversible while producing N times more work, compared to the individual operation of N units. Moreover, the collective machine can even be more reversible than the most reversible unit in the collective. This high level of reversibility becomes possible due to a special symbiotic mechanism between engine pairs.

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“…In this scenario, the following question can be stated: is it possible to use the ADCE to extract work from the atomfield system? In order to address this issue, one can use the framework of quantum thermodynamics [41][42][43][44] -a field of physics seeking to establish a quantum version for thermodynamic principles and processes. Studies in quantum thermodynamics aim to introduce appropriate definitions of work and heat [45][46][47][48][49][50][51], the development of quantum thermal machines [52][53][54][55][56][57][58][59], the analysis of the heat transport [60][61][62][63][64][65] and the validity of the second law at the microscopic level [66][67][68][69][70][71][72], the study of the stochastic thermodynamics [73,74] and the fluctuation theorems [75][76][77][78][79][80], just to name a few.…”

Section: Introductionmentioning

confidence: 99%

Antidynamical Casimir effect as a resource for work extraction

2017

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We consider the quantum Rabi model with external time modulation of the atomic frequency, which can be employed to create excitations from the vacuum state of the electromagnetic field as a consequence of the dynamical Casimir effect. Excitations can also be systematically subtracted from the atom-field system by suitably adjusting the modulation frequency, in the so-called antidynamical Casimir effect (ADCE). We evaluate the quantum thermodynamical work and show that a realistic out-of-equilibrium finite-time protocol harnessing ADCE allows for work extraction from the system, whose amount can be much bigger then the modulation amplitude, |WADCE| Ω, in contrast to the case of very slow adiabatic modulations. We provide means to control work extraction in state-of-the-art experimental scenarios, where precise frequency adjustments or complete system isolation may be difficult to attain.

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Quantum thermodynamics of general quantum processes

Cited by 105 publications

References 36 publications

Quantum thermodynamics

Quantum thermodynamics

Coherence-Induced Reversibility and Collective Operation of Quantum Heat Machines via Coherence Recycling

Antidynamical Casimir effect as a resource for work extraction

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