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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Sufficient conditions for thermal rectification in hybrid quantum structures.

Lian-Ao Wu¹, Dvira Segal

¹Chemical Physics Group, Department of Chemistry and Center for Quantum Information and Quantum Control, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada.

Physical Review Letters

|April 28, 2009

Summary

This study identifies conditions for thermal rectification in quantum systems. Two rectifier types are found: one with dissimilar reservoirs and another with differing particle statistics.

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Area of Science:

Quantum thermodynamics
Condensed matter physics
Materials science

Background:

Thermal rectification, the directional flow of heat, is crucial for thermal management.
Understanding rectification mechanisms in quantum systems is key to designing advanced thermal devices.

Purpose of the Study:

To analytically identify sufficient conditions for thermal rectification in two-terminal quantum junctions.
To classify different types of thermal rectifiers based on their underlying mechanisms.

Main Methods:

Utilizing the quantum master equation formalism.
Analyzing two-terminal junctions connected to two reservoirs.
Investigating systems with dissimilar reservoir energy structures and systems with differing particle statistics.

Main Results:

Identified two distinct classes of thermal rectifiers.
Type A rectifiers exhibit rectification due to dissimilar reservoir energy structures.
Type B rectifiers show rectification from asymmetric coupling to particles with differing statistics, even with identical baths.

Conclusions:

Sufficient conditions for thermal rectification in quantum systems are analytically established.
The findings apply to diverse hybrid junctions, including metals, dielectrics, and spin systems.
This work provides a theoretical framework for designing quantum thermal rectifiers.