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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. http://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:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.3364936DOIArticle
http://scitation.aip.org/content/aip/journal/apl/96/11?ver=pdfcovhttp://scitation.aip.org/content/aip/journal/apl/96/11/10.1063/1.3364936PublisherArticle
Group:Keck Institute for Space Studies
Funders:
Funding AgencyGrant Number
Chinese Academy of SciencesUNSPECIFIED
National Natural Science Foundation of China10803021
National Natural Science Foundation of China10621303
RadioNet UNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Koninklijke Nederlandse Akademie van Wetenschappen (KNAW)UNSPECIFIED
Record Number:CaltechAUTHORS:20160311-151453049
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160311-151453049
Usage Policy: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:14 Mar 2016 19:33

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