Phonon-blocked junction refrigerators for cryogenic quantum devices

E. Mykkanen (1) , J. S Lehtinen (1) , A. Ronzani (1) , A. Kemppinen (1) , A. Alkurdi (2) , Pierre-Olivier Chapuis (2) , M. Prunnila (1)

1 VTT - VTT Technical Research Centre of Finland
2 CETHIL - Centre d'Energétique et de Thermique de Lyon

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 solidstate 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.

Domaines: Thermique [physics.class-ph]

E. Mykkanen, J. S Lehtinen, A. Ronzani, A. Kemppinen, A. Alkurdi, et al.. Phonon-blocked junction refrigerators for cryogenic quantum devices. 2020 IEEE International Electron Devices Meeting (IEDM), Dec 2020, San Francisco, United States. pp.25.8.1-25.8.4, ⟨10.1109/IEDM13553.2020.9371901⟩. ⟨hal-03429525⟩