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Extreme reductions of entropy in an electronic double dot

MPS-Authors
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Roldan,  Edgar
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Neri,  Izaak
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Khaymovich,  Ivan M.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Jülicher,  Frank
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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1712.01693.pdf
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Citation

Singh, S., Roldan, E., Neri, I., Khaymovich, I. M., Golubev, D. S., Maisi, V. F., et al. (2019). Extreme reductions of entropy in an electronic double dot. Physical Review B, 99(11): 115422. doi:10.1103/PhysRevB.99.115422.


Cite as: http://hdl.handle.net/21.11116/0000-0003-CCB7-9
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 -k(B), where k(B) 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.