Applications of the Josephson based spectrum analyzer

Palafox, L.; Herick, Jonas; Bauer, Stephan; Kraus, Marco; Kieler, Oliver; Behr, R.

doi:10.1109/cpem49742.2020.9191890

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…If the generator shows instability in the frequency, this also contributes to the uncertainty of the measurement. For the instrument/ generator investigated in (Palafox et al 2020), this can become 0.5 µV over 2 min.…”

Section: Spectrum Analysismentioning

confidence: 98%

Josephson voltage standards as toolkit for precision metrological applications at PTB

Behr

Bauer

Herick

et al. 2022

Meas. Sci. Technol.

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60 years after the discovery of the Josephson effect, electrical DC voltage calibrations are routinely performed worldwide - mostly using automated Josephson voltage standards (JVS). Nevertheless, the field of electrical quantum voltage metrology is still propagating towards AC applications. In the past 10 years the fabrication of highly integrated arrays containing more than 50 000 or even 300 000 junctions has achieved a very robust level providing highly functional devices. Such reliable Josephson arrays are the basis for many novel applications mainly focussing on precision ac measurements for signal frequencies up to 500 kHz. Two versions of quantum AC standards are being employed. Programmable Josephson voltage standards (PJVS), based on series arrays divided into subarrays, reach amplitudes up to 20 V and usually are used as quantum voltage reference in measurement systems. Pulse driven arrays reach amplitudes up to 1 V or even 4 V and are typically used as Josephson arbitrary waveform synthesizers (JAWS). This paper summarizes the principal contributions from PTB to the present state of Josephson voltage standards with particular focus on developments for precision metrological applications and our proof-of-concept demonstrations.

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Section: Spectrum Analysismentioning

confidence: 98%