Projects per year
Abstract
We experimentally study negative fluctuations of stochastic entropy production in an electronic double dot operating in nonequilibrium steadystate 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.
Original language  English 

Article number  115422 
Pages (fromto)  115 
Number of pages  15 
Journal  Physical Review B 
Volume  99 
Issue number  11 
DOIs  
Publication status  Published  18 Mar 2019 
MoE publication type  A1 Journal articlerefereed 
Keywords
 HEAT ENGINES
 SINGLE
 THERMODYNAMICS
 FOUNDATIONS
 INFORMATION
 SYMMETRY
 SYSTEM
 WORK
Projects
 1 Active

SQH: Superconducting quantum heat engines and refrigerators
Gubaydullin, A., Peltonen, J., Pekola, J., Thomas, G., Marin Suarez, M., Senior, J., Singh, S., Subero Rengel, D., Blanchet, F., Chang, Y., Mannila, E. & Lvov, D.
27/09/2017 → 31/12/2022
Project: EU: ERC grants
Equipment
OtaNano – Low Temperature Laboratory
Pertti Hakonen (Manager)
Department of Applied PhysicsFacility/equipment: Facility