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