Erlangen 2018 – wissenschaftliches Programm

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SYMM: Symposium Micromachines

SYMM 1: Micromachines

SYMM 1.1: Hauptvortrag

Freitag, 9. März 2018, 13:30–14:00, RW HS

Some experimental contributions to the study of thermodynamics in quantum systems. — •Ian Walmsley — University of Oxford, Oxford, UK

The nature of work and information in systems where quantum mechanics is palpably operative opens new questions about the connections between macroscopic and microscopic characteristics of such systems, as well as opening the possibility for machines that use quantum principles to deliver work.

Here we report recent experiments that explore and exploit the connections between work and information and identify clear quantum signatures for the operation of heat engines. Two platforms exhibiting quantum features at room temperature provide different options for the working fluid: light and electron spins.

Using these platforms we show (i) a measurement at the few-photon level followed by a feed-forward operation allows the extraction of work from intense thermal light into an electric circuit and (ii) direct experimental evidence of quantum effects in heat engines.