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Related Experiment Videos

Mesoscopic photon heat transistor.

Teemu Ojanen1, Antti-Pekka Jauho

  • 1Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Finland. teemuo@boojum.hut.fi

Physical Review Letters
|June 4, 2008
PubMed
Summary
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Researchers demonstrate a mesoscopic photon heat transistor (MPHT) that controls heat transport using quantum circuits and electromagnetic fluctuations. This device concept offers novel possibilities for thermal management and quantum technologies.

Area of Science:

  • Quantum Thermodynamics
  • Mesoscopic Physics
  • Photonics

Background:

  • Heat transport between bodies is typically governed by classical physics.
  • Controlling thermal energy at the quantum level is crucial for advanced technologies.
  • Electromagnetic fluctuations mediate heat transfer, offering a potential control mechanism.

Purpose of the Study:

  • To introduce the concept of a mesoscopic photon heat transistor (MPHT).
  • To theoretically analyze the control of heat transport via quantum circuits.
  • To provide a framework for experimental implementation.

Main Methods:

  • Development of a novel Meir-Wingreen-Landauer-type conductance formula for photonic heat current.
  • Theoretical analysis of heat transport through an intermediate quantum circuit coupled to reservoirs.

Related Experiment Videos

  • Exact solution for an electromagnetic resonator as the intermediate circuit.

    • Main Results:

    • Demonstrated that heat transport can be controlled using an intermediate quantum circuit.
    • Derived a formula for calculating photonic heat current in mesoscopic systems.
    • Presented an exact solution for a resonator-based MPHT.

    Conclusions:

    • The mesoscopic photon heat transistor (MPHT) is a viable device concept.
    • Quantum circuits offer precise control over electromagnetic heat transport.
    • Experimental implementation is feasible using flux-controlled SQUID circuits.