"Heat transport in a single quantum dot junction"

The proper management of dissipation and heat flows in quantum nanoelectronic devices will become of growing importance, in particular in view of preserving coherence in quantum information processing applications. Single-quantum-dot junctions, which involve electron transport through a single quantum level, are a key element for quantum electronics. We study the thermoelectric and thermal transport properties of such devices. We demonstrate that the gate potential can be used to modulate the heat carried by electrons across a single quantum level, which remains however significantly below the naive expectation from the Wiedemann-Franz prediction. Although a general theory for heat transport through a quantum dot junction, accounting for on-site interactions, is not available, the heat transport data are well captured at the conductance resonances by non-interacting scattering theory. Eventually, going beyond quasi-equilibrium conditions, the potential of time-resolved thermometry for the calorimetric detection of out-of-equilibrium processes and fluctuations in quantum devices will be discussed.