Development and Investigation of SNS Josephson Arrays for the Josephson Arbitrary Waveform Synthesizer

作者：Kohlmann Johannes^*; Kieler Oliver F; Iuzzolino Ricardo; Lee Jinni; Behr Ralf; Egeling Bert; Mueller Franz

来源：IEEE Transactions on Instrumentation and Measurement, 2009, 58(4): 797-802.

DOI：10.1109/TIM.2008.2007033

• 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 junction series arrays are developed and investigated for applications in the Josephson arbitrary waveform synthesizer (JAWS). The series arrays contain up to about 10000 junctions arranged in a meanderlike design. AC voltages and arbitrary waveforms are synthesized by operation of the Josephson junctions by short current pulses. Higher harmonies 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.

• 出版日期2009-4