Print Email Facebook Twitter Quantum noise in a terahertz hot electron bolometer mixer Title Quantum noise in a terahertz hot electron bolometer mixer Author Zhang, W. Khosropanah, P. Gao, J.R. Kollberg, E.L. Yngvesson, K.S. Bansal, T. Barends, R. Klapwijk, T.M. Faculty Applied Sciences Department Kavli Institute of Nanoscience Date 2010-03-19 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 ?-factor (the quantum efficiency of the HEB) obtained experimentally agrees reasonably well with the calculated value. Subject bolometersmillimetre wave mixersquantum noise To reference this document use: http://resolver.tudelft.nl/uuid:3d4e0b56-4905-4a74-a280-91ca0e79967d DOI https://doi.org/10.1063/1.3364936 Publisher American Institute of Physics ISSN 0003-6951 Source http://link.aip.org/link/APPLAB/v96/i11/p111113/s1 Source Applied Physics Letters, 96 (11), 2010 Part of collection Institutional Repository Document type journal article Rights (c) 2010 The Author(s); American Institute of Physics Files PDF Gao_2010.pdf 198.49 KB Close viewer /islandora/object/uuid:3d4e0b56-4905-4a74-a280-91ca0e79967d/datastream/OBJ/view