Coherent caloritronics in Josephson-based nanocircuits

Abstract

We describe here the first experimental realization of a heat interferometer, thermal counterpart of the well-known superconducting quantum interference device (SQUID). These findings demonstrate, on the first place, the existence of phase-dependent heat transport in Josephson-based superconducting circuits and, on the second place, open the way to novel ways of mastering heat at the nanoscale. Combining the use of external magnetic fields for phase biasing and different Josephson junction architectures we show here that a number of heat interference patterns can be obtained. The experimental realization of these architectures, besides being relevant from a fundamental physics point of view, might find important technological application as building blocks of phase-coherent quantum thermal circuits. In particular, the performance of two different heat rectifying devices is analyzed.

34 pages, 15 figures, review article for Ultra-low temperatures and nanophysics ULTN2013. Microkelvin Proceedings

References in corpus (8)

• Single-mode heat conduction by photons
• The Josephson heat interferometer
• Berry-Phase induced Heat Pumping and its Impact on the Fluctuation Theorem
• Recombination limited energy relaxation in a BCS superconductor
• Phase Modulated Thermal Conductance of Josephson Weak Links
• Phase-controlled superconducting heat-flux quantum modulator
• Heat transport through a Josephson junction
• Suppression of the critical current of a balanced SQUID

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