Realization of Cold-Electron Bolometers with Ultimate Sensitivity due to Strong Electron Self-Cooling
Paper in proceeding, 2017
We have realized an ultimate photon-noise-limited array of cold-electron bolometers (CEBs) for OLIMPO Balloon Telescope. The CEB array demonstrates very effective electron self-cooling of the absorber from 310 mK to 100 mK without optical power load, P-0, and from 310 mK to 160 mK with P-0=20 pW at v=345 GHz. Due to this effective electron cooling acting as strong electrothermal feedback, the ultimate photon-noise-limited mode of operation is realized in the range of P-0 starting from 8 pW and up to P-0=20 pW at T-ph=330 mK. To our knowledge, there is no analog in the world for bolometers working at electron temperature less than phonon temperature.
2D array
electron cooling
SIN tunnel junction
cold-electron bolometer
photon noise
Author
Leonid Kuzmin
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Vasily Shamporov
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Alexandra Gunbina
Chalmers, Microtechnology and Nanoscience (MC2)
A. L. Pankratov
Novosibirsk State Technical University
Russian Academy of Sciences
A. V. Gordeeva
Novosibirsk State Technical University
V. O. Zbrozhek
Novosibirsk State Technical University
L. S. Revin
Novosibirsk State Technical University
Russian Academy of Sciences
S. Masi
Sapienza University of Rome
P. de Bernardis
Sapienza University of Rome
2017 16TH INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE (ISEC)
2374-4952 (ISSN)
Vol. 2018-January978-1-5090-5868-6 (ISBN)
16th International Superconductive Electronics Conference (ISEC)
Sorrento, Italy,
Sorrento, Italy,
Subject Categories (SSIF 2011)
Atom and Molecular Physics and Optics
Other Physics Topics
Condensed Matter Physics
DOI
10.1109/ISEC.2017.8314194