Open AccessLoad compensation bridge for Josephson arbitrary waveform synthesizers
Author(s) -
F. Overney,
Yaowaret Pimsut,
Stephan Bauer,
Oliver Kieler,
R. Behr,
B. Jeanneret
Publication year - 2020
Publication title -
measurement science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.48
H-Index - 136
eISSN - 1361-6501
pISSN - 0957-0233
DOI - 10.1088/1361-6501/ab62c7
Subject(s) - waveform , compensation (psychology) , voltage , josephson effect , physics , electrical engineering , electrical impedance , computer science , acoustics , engineering , quantum mechanics , superconductivity , psychology , psychoanalysis
The Josephson arbitrary waveform synthesizer is a quantum-based voltage source that can generate arbitrary waveforms with quantum accuracy. However, these state-of-the-art performances are drastically decreased by the wiring connecting the source to the device under test. This wiring introduces deviations from the Josephson voltage which scale quadratically with frequency. This paper describes a load compensation bridge that fully compensates the load of the Josephson arbitrary waveform synthesizer by the input impedance of the device under test and completely suppresses the frequency dependence up to a frequency of 80 kHz with an overall uncertainty of 2.8 V V −1 .