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Noise Performance of Lumped Element Direct Current Superconducting Quantum Interference Device Amplifiers in the 4 GHz-8 GHz Range

Published

Author(s)

Lafe F. Spietz, Kent D. Irwin, Minhyea Lee, Jose A. Aumentado

Abstract

We report on the noise of a lumped element Direct Current Superconducting Quantum Interference Device amplifier. We show that the noise temperature in the 4 GHz-8 GHz range over ranges of 10's of MHz is below 1 kelvin (three photons of added noise), characterize the overall behavior of the noise as a function of bias parameters, and discuss potential mechanisms which determine the noise performance in this amplifier. We show that this device can provide more than a factor of 10 improvement in practical system noise over existing phase-preserving microwave measurement systems in this frequency band.
Citation
Applied Physics Letters
Volume
97

Citation

Spietz, L. , Irwin, K. , Lee, M. and Aumentado, J. (2010), Noise Performance of Lumped Element Direct Current Superconducting Quantum Interference Device Amplifiers in the 4 GHz-8 GHz Range, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905882 (Accessed April 23, 2024)
Created October 4, 2010, Updated February 19, 2017