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Statut |
Confirmé |
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Série |
SEM-PHYS-ENS |
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Domaines |
quant-ph |
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Date |
Mercredi 25 Octobre 2017 |
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Heure |
14:00 |
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Institut |
LKB |
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Salle |
Collège de France, salle 2 |
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Nom de l'orateur |
Paz |
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Prenom de l'orateur |
Juan Pablo |
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Addresse email de l'orateur |
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Institution de l'orateur |
Université de Buenos Aires |
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Titre |
Using a Quantum Work Meter to test non equilibrium fluctuation theorems |
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Résumé |
The so called "fluctuation theorems" are one of the most important results in non equilibrium thermodynamics obtained during the last decades. They connect the behavior of a system evolving far away from equilibrium with certain properties of thermal equilibrium states of the same system. The work probability distribution plays a major role in such theorems and its measurement attracted a lot of interest recently. In this talk I will review a new strategy for measuring work on a quantum system which evolves out of equilibrium. I will also show how these ideas have been recently implemented in an experiment which enabled us to directly sample the work probability distribution. The "quantum work meter" I will present, built with an ensemble of cold Rubidium atoms manipulated by an atom chip, enabled us to perform a direct test of the most notable fluctuation theorem: the Jarzynski identity. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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