Title :
Development and Investigation of SNS Josephson Arrays for the Josephson Arbitrary Waveform Synthesizer
Author :
Kohlmann, Johannes ; Kieler, Oliver F. ; Iuzzolino, Ricardo ; Lee, Jinni ; Behr, Ralf ; Egeling, Bert ; Müller, Franz
Author_Institution :
Phys.-Tech. Bundesanstalt, Braunschweig
fDate :
4/1/2009 12:00:00 AM
Abstract :
Superconductor-normal metal-superconductor(SNS) Josephson junction series arrays are developed and investigated for applications in the Josephson arbitrary waveform synthesizer (JAWS). The series arrays contain up to about 10 000 junctions arranged in a meanderlike design. AC voltages and arbitrary waveforms are synthesized by operation of the Josephson junctions by short current pulses. Higher harmonics are at least 110 dB below the fundamental. To verify the generated waveforms, a spectrum analyzer that has initially been calibrated using a binary-divided programmable Josephson voltage standard is used.
Keywords :
Josephson effect; measurement standards; superconductor-normal-superconductor devices; voltage measurement; Josephson arbitrary waveform synthesizer; Josephson arrays; Josephson junctions; binary-divided programmable Josephson voltage standard; spectrum analyzer; superconductor-normal metal-superconductor; AC Josephson voltage standard; Josephson arbitrary waveform synthesizer (JAWS); Josephson junction series arrays; superconductor–normal metal–superconductor (SNS) Josephson junctions; superconductor–normal metal–superconductor (SNS) Josephson junctions;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2008.2007033
