We propose a phase-controlled heat-flux quantum valve based on the proximity effect driven by a superconducting quantum interference proximity transistor (SQUIPT). Its operation relies on the phase-dependent quasiparticle density of states in the Josephson weak-link of the SQUIPT which controls thermal transport across the device. In a realistic Al/Cu-based setup the structure can provide efficient control of thermal current inducing temperature swings exceeding ∼100~mK, and flux-to-temperature transfer coefficients up to ∼500~mK/Φ0 below 100~mK. The nanovalve performances improve by lowering the bath temperature, making the proposed structure a promising building-block for the implementation of coherent caloritronic devices operating below 1~K.
@article{arxiv.1407.4915,
title = {Proximity nanovalve with large phase-tunable thermal conductance},
author = {E. Strambini and F. S. Bergeret and F. Giazotto},
journal= {arXiv preprint arXiv:1407.4915},
year = {2014}
}