Phonon-blocked junction refrigerators for cryogenic quantum devices

Abstract

Refrigeration is an important enabler for quantum technology. The very low energy of the fundamental excitations typically utilized in quantum technology devices and systems requires temperature well below 1 K. Expensive cryostats are utilized in reaching sub-1 K regime and solid-state cooling solutions would revolutionize the field. New electronic micro-coolers based on phonon-blocked semiconductor-superconductor junctions could provide a viable route to such miniaturization. Here, we investigate the performance limits of these junction refrigerators.

5 pages, 3 figures, published in 2020 International Electron Devices Meeting (IEDM)

References in corpus (4)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Superconducting nanowire single-photon detectors: physics and applications
• Micrometre-scale refrigerators
• Cooling electrons from 1 K to 400 mK with V-based nanorefrigerators