Extreme reductions of entropy in an electronic double dot

Shilpi Singh, Édgar Roldán, Izaak Neri, Ivan M. Khaymovich, Dmitry S. Golubev, Ville F. Maisi, Joonas T. Peltonen, Frank Jülicher, Jukka P. Pekola

Research output: Contribution to journalArticlepeer-review

13 Citations (SciVal)

Abstract

We experimentally study negative fluctuations of stochastic entropy production in an electronic double dot operating in nonequilibrium steady-state conditions. We record millions of random electron tunneling events at different bias points, thus collecting extensive statistics. We show that for all bias voltages, the experimental average values of the minima of stochastic entropy production lie above -kB, where kB is the Boltzmann constant, in agreement with recent theoretical predictions for nonequilibrium steady states. Furthermore, we also demonstrate that the experimental cumulative distribution of the entropy production minima is bounded, at all times and for all bias voltages, by a universal expression predicted by the theory. We also extend our theory by deriving a general bound for the average value of the maximum heat absorbed by a mesoscopic system from the environment and compare this result with experimental data. Finally, we show by numerical simulations that these results are not necessarily valid under nonstationary conditions.

Original languageEnglish
Article number115422
JournalPhysical Review B
Volume99
Issue number11
DOIs
Publication statusPublished - 2019

Subject classification (UKÄ)

  • Other Physics Topics
  • Condensed Matter Physics

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