Quantum noise in a terahertz hot electron bolometer mixer

Zhang, W. and Khosropanah, P. and Gao, J. R. and Kollberg, E. L. and Yngvesson, K. S. and Bansal, T. and Barends, R. and Klapwijk, T. M. (2010) Quantum noise in a terahertz hot electron bolometer mixer. Applied Physics Letters, 96 (11). Art. No. 111113. ISSN 0003-6951. doi:10.1063/1.3364936. https://resolver.caltech.edu/CaltechAUTHORS:20160311-151453049

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Abstract

We have measured the noise temperature of a single, sensitive superconducting NbN hot electron bolometer (HEB) mixer in a frequency range from 1.6 to 5.3 THz, using a setup with all the key components in vacuum. By analyzing the measured receiver noise temperature using a quantum noise (QN) model for HEB mixers, we confirm the effect of QN. The QN is found to be responsible for about half of the receiver noise at the highest frequency in our measurements. The β-factor (the quantum efficiency of the HEB) obtained experimentally agrees reasonably well with the calculated value.

Item Type:

Article

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1063/1.3364936	DOI	Article
http://scitation.aip.org/content/aip/journal/apl/96/11?ver=pdfcovhttp://scitation.aip.org/content/aip/journal/apl/96/11/10.1063/1.3364936	Publisher	Article

Group:

Keck Institute for Space Studies

Funders:

Funding Agency	Grant Number
Chinese Academy of Sciences	UNSPECIFIED
National Natural Science Foundation of China	10803021
National Natural Science Foundation of China	10621303
RadioNet	UNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)	UNSPECIFIED
Koninklijke Nederlandse Akademie van Wetenschappen (KNAW)	UNSPECIFIED

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DOI:

10.1063/1.3364936

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CaltechAUTHORS:20160311-151453049

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https://resolver.caltech.edu/CaltechAUTHORS:20160311-151453049

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No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

65320

Collection:

CaltechAUTHORS

Deposited By:

Colette Connor

Deposited On:

14 Mar 2016 19:33

Last Modified:

10 Nov 2021 23:44

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