Roman Mankowsky is awarded the Reimar Lüst Grant
of the Max Planck Society for his PhD studies
Read moreMarta Gibert receives SNSF Professorship
for her project on Functional oxide heterostructures by design.
Read morePublication Detail / Abstract
Thermometry of ultracold atoms via nonequilibrium work distributions
published in Physical Review A on May 23, 2016
> Full text via publisher
Estimating the temperature of a cold quantum system is difficult. Usually one measures a well-understood thermal state and uses that prior knowledge to infer its temperature. In contrast, we introduce a method of thermometry that assumes minimal knowledge of the state of a system and is potentially nondestructive. Our method uses a universal temperature dependence of the quench dynamics of an initially thermal system coupled to a qubit probe that follows from the Tasaki-Crooks theorem for nonequilibrium work distributions.We provide examples for a cold-atom system, in which our thermometry protocol may retain accuracy and precision at subnano-Kelvin temperatures.
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