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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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Quantum thermal diode with additional control by auxiliary atomic states.

Qin Zhang¹, Zi-Chen Zhang¹, Yi-Jia Yang¹

¹Dalian University of Technology, School of Physics, Dalian 116024, China.

Physical Review. E

|November 18, 2025

Summary

This summary is machine-generated.

This study explores a quantum thermal diode. Auxiliary atom states control heat current and rectification, offering tunable thermal transport.

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Area of Science:

Quantum physics
Thermodynamics
Condensed matter physics

Background:

Quantum thermal diodes enable unidirectional heat flow.
Understanding quantum heat transport is crucial for novel thermal devices.

Purpose of the Study:

Investigate a quantum thermal diode model.
Analyze the impact of auxiliary atoms on heat current and rectification.

Main Methods:

Theoretical study of a quantum thermal diode.
Model composed of two two-level atoms coupled to auxiliary two-level atoms.

Main Results:

Excited auxiliary atoms weaken heat current; ground-state atoms enhance it.
Rectification depends on atomic frequency relationship and number of auxiliary atoms.
Superposition states' impact is determined by the excited-state component.

Conclusions:

Auxiliary atom states offer control over heat current and rectification.
Eliminating rectification is possible through careful coupling design.
Potential for tunable thermal transport in quantum systems.