Signature of resonant modes in radiative heat current noise spectrum

Abstract

Radiative heat transfer between bodies is often dominated by a narrow resonance in the transmission, e.~g. due to a cavity mode or a surface excitation. However, this resonant character is not visible in the average heat current. Here, we show that the noise spectrum of heat current can serve as a direct probe of the heat-carrying excitations. Namely, the resonant mode produces a sharp peak in the noise spectrum with a width related to the mode lifetime. We demonstrate that heat transfer in realistic superconducting circuits or between two-dimensional metals can realize our predictions.

References in corpus (6)

• Near-field Radiative Heat Transfer in Many-Body Systems
• Single-mode heat conduction by photons
• Near field versus far field in radiative heat transfer between two-dimensional metals
• Role of disorder in plasmon-assisted near-field heat transfer between two-dimensional metals
• General trace formula for heat flux fluctuations
• Down-conversion of quantum fluctuations of photonic heat current in a circuit

Cited by in corpus (6)

• Electron cooling in graphene enhanced by plasmon-hydron resonance
• Transport in electron-photon systems
• Modulating near-field thermal transfer through temporal drivings: a quantum many-body theory
• Asymmetry-induced radiative heat transfer in Floquet systems
• Scattering approach to near-field radiative heat transfer
• Fluctuations of the energy density and intensity for arbitrary objects in an arbitrary environment