Observation of photon noise by cold-electron bolometers
Artikel i vetenskaplig tidskrift, 2017

We have observed the photon noise by measuring a response to the black body 350 GHz radiation and noise of the cold-electron bolometers (CEBs). The experimental results have been fit to the theoretical model of CEBs with two heat-balance equations. The measured noise has been decomposed into several terms with the help of theory. It is demonstrated that the photon noise exceeds any other noise components, which allows us to conclude that the bolometers measure the photon noise. Moreover, a peculiar shape of the noise dependence on the absorbed power originates completely from the photonic component according to the theory. In the additional experiment on heating of the cryostat plate together with the sample holder, we have observed the near independence of the noise on the electron temperature of the absorber, which has provided another proof of the presence of the photon noise in the first experiment. The least ratio between internal and photon noise equivalent powers, observed in our experiments, is 1.1 for the absorbed power of 1-2 pW.

Författare

A. V. Gordeeva

Russian Academy of Sciences

Lobachevsky University

Nizhny Novgorod State Technical University

V. O. Zbrozhek

Nizhny Novgorod State Technical University

A. L. Pankratov

Lobachevsky University

Russian Academy of Sciences

Nizhny Novgorod State Technical University

L. S. Revin

Nizhny Novgorod State Technical University

Russian Academy of Sciences

Lobachevsky University

V. A. Shamporov

Lobachevsky University

Nizhny Novgorod State Technical University

Russian Academy of Sciences

A. A. Gunbina

Nizhny Novgorod State Technical University

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 110 16 162603

Ämneskategorier

Fysik

Nanoteknik

DOI

10.1063/1.4982031

Mer information

Skapat

2017-10-07