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EnglishAn alternating programmable Josephson voltage standard (AC-PJVS) configured as a multibit digital-to-analog converter has been developed to explore the staircase-approximated waveforms synthesis at frequencies up to the acoustic range. The AC-PJVS setup is based on state-of-the-art modular electronics able to bias individually the subsections of a binary-divided array consisting of 8192 intrinsically shunted SNIS junctions. High order Shapiro steps have been employed for waveform synthesis having amplitude beyond 1 V by finely trimming the SNIS temperature using a two stage cryocooler. Alongside the experiments on the synthesis, the experimental setup was improved for direct comparisons between quantum staircase waves and conventional sine waves based on the use of a room temperature-operating phase sensitive detector and on a differential precision sampling system. Both methods maximize the accuracy obtained from the AC-PJVS synthesizer, allowing, in principle, its use for primary LF AC voltage metrology.
Exploring High-Order Shapiro Steps for Staircase-Approximated Josephson Waves with a Dry-Cooled SNIS Programmable Array / Trinchera, Bruno; Sosso, Andrea; Monticone, Eugenio; Durandetto, Paolo. - ELETTRONICO. - (2017), pp. 1-3. ((Intervento presentato al convegno 2017 16th International Superconductive Electronics Conference (ISEC) tenutosi a Naples, Italy nel 12-16 June 2017.
| Titolo: | Exploring High-Order Shapiro Steps for Staircase-Approximated Josephson Waves with a Dry-Cooled SNIS Programmable Array |
| Autori: | |
| Data di pubblicazione: | 2017 |
| Abstract: | An alternating programmable Josephson voltage standard (AC-PJVS) configured as a multibit digital...-to-analog converter has been developed to explore the staircase-approximated waveforms synthesis at frequencies up to the acoustic range. The AC-PJVS setup is based on state-of-the-art modular electronics able to bias individually the subsections of a binary-divided array consisting of 8192 intrinsically shunted SNIS junctions. High order Shapiro steps have been employed for waveform synthesis having amplitude beyond 1 V by finely trimming the SNIS temperature using a two stage cryocooler. Alongside the experiments on the synthesis, the experimental setup was improved for direct comparisons between quantum staircase waves and conventional sine waves based on the use of a room temperature-operating phase sensitive detector and on a differential precision sampling system. Both methods maximize the accuracy obtained from the AC-PJVS synthesizer, allowing, in principle, its use for primary LF AC voltage metrology. |
| ISBN: | 978-1-5090-5868-6 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| Exploring High-Order Shapiro Steps for Staircase-Approximated Josephson Waves with a Dry-Cooled SNIS Programmable Array.pdf | Articolo principale | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2709763
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