Abstract
We study the nonequilibrium properties of an electronic circuit composed of a double quantum dot (DQD) channel capacitively coupled to a quantum point contact (QPC) within the framework of stochastic thermodynamics. We show that the transition rates describing the dynamics satisfy a nontrivial local detailed balance and that the statistics of energy and particle currents across both channels obeys a fluctuation theorem. We analyze two regimes where the device operates as a thermodynamic machine and study its output power and efficiency fluctuations. We show that the electrons tunneling through the QPC without interacting with the DQD have a strong effect on the device efficiency.
Highlights
Semiconducting multichannel circuits made of quantum dots and quantum point contacts (QPCs) are nowadays commonly devised and studied experimentally [1,2,3,4,5,6,7,8,9,10]
We show that the electrons tunneling through the QPC without interacting with the double quantum dot (DQD) have a strong effect on the device efficiency
The QPC detector was shown to modify the thermodynamic affinity of the DQD channel while preserving the fluctuation theorem (FT) symmetry in the DQD circuit [30]
Summary
We study the nonequilibrium properties of an electronic circuit composed of a double quantum dot licence. (DQD) channel capacitively coupled to a quantum point contact (QPC) within the framework of. Any further distribution of this work must maintain stochastic thermodynamics. We show that the transition rates describing the dynamics satisfy a attribution to the nontrivial local detailed balance and that the statistics of energy and particle currents across both author(s) and the title of the work, journal citation channels obeys a fluctuation theorem. We analyze two regimes where the device operates as a and DOI. Thermodynamic machine and study its output power and efficiency fluctuations. We show that the electrons tunneling through the QPC without interacting with the DQD have a strong effect on the device efficiency
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