The role of quantum measurement in stochastic thermodynamics

Elouard, Cyril; Herrera-Martí, David A.; Clusel, Maxime; Auffèves, Alexia

doi:10.1038/s41534-017-0008-4

Cited by 196 publications

(231 citation statements)

References 42 publications

Supporting

Mentioning

227

Contrasting

Unclassified

Order By: Relevance

“…Alternative frameworks for defining heat and work present yet another direction for potential experimental tests of quantum fluctuation theorems. For example, in Elouard et al [77][78][79], energy changes are expressed in terms of three contributions-work, classical heat, and quantum heat. In the interpretation developed in [77], work is defined differently than in the present manuscript, and the energy changes measured in our experiment include contributions from quantum heat.…”

Section: Discussionmentioning

confidence: 99%

Verification of the quantum nonequilibrium work relation in the presence of decoherence

Smith

et al. 2018

New J. Phys.

View full text Add to dashboard Cite

Although nonequilibrium work and fluctuation relations have been studied in detail within classical statistical physics, extending these results to open quantum systems has proven to be conceptually difficult. For systems that undergo decoherence but not dissipation, we argue that it is natural to define quantum work exactly as for isolated quantum systems, using the two-point measurement protocol. Complementing previous theoretical analysis using quantum channels, we show that the nonequilibrium work relation remains valid in this situation, and we test this assertion experimentally using a system engineered from a trapped ion, adding external noise to produce the effects of decoherence. Our experimental results reveal the work relationʼs validity over a variety of driving speeds, decoherence rates, and effective temperatures and represent the first confirmation of the work relation for evolution described by a non-unitary master equation.

show abstract

Section: Discussionmentioning

confidence: 99%

Verification of the quantum nonequilibrium work relation in the presence of decoherence

Smith

et al. 2018

New J. Phys.

View full text Add to dashboard Cite

show abstract

“…This measurement shall take place during the time interval -( ) t t , n n . Is it know that a projective measurement can change the mean energy of the system [42][43][44], which can even give rise to measurement induced extracted work in a Maxwell demon setup [45].…”

Section: Feedback Controlmentioning

confidence: 99%

Maxwell’s demon in the quantum-Zeno regime and beyond

Engelhardt

Schaller

2018

New J. Phys.

View full text Add to dashboard Cite

The long-standing paradigm of Maxwell's demon is till nowadays a frequently investigated issue, which still provides interesting insights into basic physical questions. Considering a single-electron transistor, where we implement a Maxwell demon by a piecewise-constant feedback protocol, we investigate quantum implications of the Maxwell demon. To this end, we harness a dynamical coarsegraining method, which provides a convenient and accurate description of the system dynamics even for high measurement rates. In doing so, we are able to investigate the Maxwell demon in a quantumZeno regime leading to transport blockade. We argue that there is a measurement rate providing an optimal performance. Moreover, we find that besides building up a chemical gradient, there can be also a regime where the feedback loop additionally extracts energy, which results from the energy nonconserving character of the projective measurement.

show abstract

“…If the initial state is not thermal but has coherences, then also the first measurement will non-trivially affect these initial coherences and lead to work and heat contributions. Work probability distributions and generalised Jarzynski-type relations have been proposed to account for these coherences using path-integral and quantum jump approaches [81,82].…”

Section: Quantum Fluctuation Relationsmentioning

confidence: 99%

Quantum thermodynamics

Vinjanampathy¹,

Anders²

2016

Contemporary Physics

904

806

View full text Add to dashboard Cite

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.

show abstract

The role of quantum measurement in stochastic thermodynamics

Cited by 196 publications

References 42 publications

Verification of the quantum nonequilibrium work relation in the presence of decoherence

Verification of the quantum nonequilibrium work relation in the presence of decoherence

Maxwell’s demon in the quantum-Zeno regime and beyond

Quantum thermodynamics

Contact Info

Product

Resources

About