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

Volume

58

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

797

Lastpage

802

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2008.2007033

Filename

4682714