Realization of Cold-Electron Bolometers with Ultimate Sensitivity due to Strong Electron Self-Cooling
Paper in proceedings, 2018

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

cold-electron bolometer

SIN tunnel junction

photon noise

electron cooling

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

Russian Academy of Sciences

NSTU

A. V. Gordeeva

NSTU

V. O. Zbrozhek

NSTU

L. S. Revin

NSTU

Russian Academy of Sciences

A. L. Pankratov

NSTU

Russian Academy of Sciences

L. S. Revin

Russian Academy of Sciences

NSTU

S. Masi

Sapienza University of Rome

P. de Bernardis

Sapienza University of Rome

2017 16TH INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE (ISEC)

2374-4952 (ISSN)

16th International Superconductive Electronics Conference (ISEC)
Sorrento, Italy,

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1109/ISEC.2017.8314194

More information

Latest update

3/5/2020 1