Phase-tunable Josephson thermal router

Abstract

Since the the first studies of thermodynamics, heat transport has been a crucial element for the understanding of any thermal system. Quantum mechanics has introduced new appealing ingredients for the manipulation of heat currents, such as the long-range coherence of the superconducting condensate. The latter has been exploited by phase-coherent caloritronics, a young field of nanoscience, to realize Josephson heat interferometers, which can control electronic thermal currents as a function of the external magnetic flux. So far, only one output temperature has been modulated, while multi-terminal devices that allow to distribute the heat flux among different reservoirs are still missing. Here, we report the experimental realization of a phase-tunable thermal router able to control the heat transferred between two terminals residing at different temperatures. Thanks to the Josephson effect, our structure allows to regulate the thermal gradient between the output electrodes until reaching its inversion. Together with interferometers, heat diodes and thermal memories, the thermal router represents a fundamental step towards the thermal conversion of non-linear electronic devices, and the realization of caloritronic logic components.

arXiv comment9 pages, 5 figures

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Cited by in corpus (19)

• Josephson-Threshold Calorimeter
• Phase-dependent heat and charge transport through superconductor-quantum dot hybrids
• Engineering dynamical couplings for quantum thermodynamic tasks
• Non-linear critical current thermal response of an asymmetric Josephson tunnel junction
• Phase-coherent solitonic Josephson heat oscillator
• Coherent Josephson thermodynamic cycles
• Solitonic Josephson thermal transport
• Phase-coherent caloritronics with ordinary and topological Josephson junctions
• Nonlocal thermoelectric engines in hybrid topological Josephson junctions
• Phase-coherent heat circulators with normal- or superconducting contacts
• Highly efficient phase-tunable photonic thermal diode
• Solitonic thermal transport in a current biased long Josephson junction
• Superconductor-quantum dot hybrid coolers
• Heat-transfer fingerprint of Josephson breathers
• Thermodynamics of a phase-driven proximity Josephson junction
• Phase-dependent transport in thermally-driven superconducting single-electron transistors
• Three-terminal normal-superconductor junction as thermal transistor
• Thermal control across a chain of electronic nanocavities
• Out-of-equilibrium nonlinear model of thermoelectricity in superconducting tunnel junctions