Optimal superconducting hybrid machine

Optimal engine performances can be accomplished by quantum effects. Here we explore two routes toward ideal engines, namely (1) quantum systems that operate as hybrid machines being able to perform more than one useful task and (2) the suppression of fluctuations in doing such tasks. For classical d...

Full description

Saved in:
Bibliographic Details
Published inPhysical review research Vol. 5; no. 1; p. 013038
Main Authors López, Rosa, Lim, Jong Soo, Kim, Kun Woo
Format Journal Article
LanguageEnglish
Published American Physical Society 01.01.2023
Online AccessGet full text

Cover

More Information
Summary:Optimal engine performances can be accomplished by quantum effects. Here we explore two routes toward ideal engines, namely (1) quantum systems that operate as hybrid machines being able to perform more than one useful task and (2) the suppression of fluctuations in doing such tasks. For classical devices, the absence of fluctuations is conditioned by a high entropy production, as dictates the thermodynamic uncertainty relations. Here we generalize such relations for multiterminal conductors that operate as hybrid thermal machines. These relations are overcome in quantum conductors as we show for a double quantum dot contacted to normal metals and a reservoir being a generator of entangled Cooper pairs.
ISSN:2643-1564
2643-1564
DOI:10.1103/PhysRevResearch.5.013038