Experimental Assessment of Entropy Production in a Continuously Measured Mechanical Resonator

Autor(es)

Rossi, Massimiliano ^{[1, 2]} ; Mancino, Luca ^[3] ; Landi, Gabriel T. ^[4] ; Paternostro, Mauro ^[3] ; Schliesser, Albert ^{[1, 2]} ; Belenchia, Alessio ^[3]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Physical Review Letters; v. 125, n. 8 AUG 19 2020.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies
• Beneficiário: Gabriel Teixeira Landi
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/07973-5 - Termodinâmica e tecnologias de informação utilizando sistemas quânticos de variáveis contínuas
• Beneficiário: Gabriel Teixeira Landi
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/12813-0 - Termodinâmica quântica de sistemas bosônicos
• Beneficiário: Gabriel Teixeira Landi
• Linha de fomento: Auxílio à Pesquisa - Regular