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Status |
Confirmed |
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Seminar Series |
SEM-PHYS-ENS |
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Subjects |
quant-ph |
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Date |
Wednesday 25 October 2017 |
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Time |
14:00 |
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Institute |
LKB |
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Seminar Room |
Collège de France, salle 2 |
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Speaker's Last Name |
Paz |
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Speaker's First Name |
Juan Pablo |
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Speaker's Email Address |
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Speaker's Institution |
Université de Buenos Aires |
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Title |
Using a Quantum Work Meter to test non equilibrium fluctuation theorems |
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Abstract |
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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