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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Experimental Assessment of Entropy Production in a Continuously Measured Mechanical Resonator

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Author(s):
Rossi, Massimiliano [1, 2] ; Mancino, Luca [3] ; Landi, Gabriel T. [4] ; Paternostro, Mauro [3] ; Schliesser, Albert [1, 2] ; Belenchia, Alessio [3]
Total Authors: 6
Affiliation:
[1] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen - Denmark
[2] Univ Copenhagen, Ctr Hybrid Quantum Networks Hy Q, Niels Bohr Inst, DK-2100 Copenhagen - Denmark
[3] Queens Univ, Ctr Theoret Atom Mol & Opt Phys, Sch Math & Phys, Belfast BT7 1NN, Antrim - North Ireland
[4] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Physical Review Letters; v. 125, n. 8 AUG 19 2020.
Web of Science Citations: 0
Abstract

The information on a quantum process acquired through measurements plays a crucial role in the determination of its nonequilibrium thermodynamic properties. We report on the experimental inference of the stochastic entropy production rate for a continuously monitored mesoscopic quantum system. We consider an optomechanical system subjected to continuous displacement Gaussian measurements and characterize the entropy production rate of the individual trajectories followed by the system in its stochastic dynamics, employing a phase-space description in terms of the Wigner entropy. Owing to the specific regime of our experiment, we are able to single out the informational contribution to the entropy production arising from conditioning the state on the measurement outcomes. Our experiment embodies a significant step towards the demonstration of full-scale control of fundamental thermodynamic processes at the mesoscopic quantum scale. (AU)

FAPESP's process: 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants
FAPESP's process: 17/07973-5 - Thermodynamics and information technologies with continuous variable quantum systems
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants
FAPESP's process: 18/12813-0 - Quantum thermodynamics of bosonic systems
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants