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EnglishQuantum digital-to-analog converters (DACs) based on programmable Josephson array [Programmable Josephson Voltage Standard (PJVS)] represent the most widely used quantum standard in ac voltage calibrations. The extension of PJVS frequency above the kilohertz range appears to be arduous; however, some enhancements are still practicable. In this work, we demonstrate the possibility to advantageously operate a conventional binary-divided PJVS array with a reduced number of bias lines. This feature is achieved by exploiting both the first and the second Shapiro steps along with nonconventional DAC codings. Two newly devised bias techniques are described in detail and preliminary experimental tests on waveform synthesis have been carried out and are presented here.
Non-Conventional PJVS Exploiting First and Second Steps to Reduce Junctions and Bias Lines / Durandetto, Paolo; Sosso, Andrea. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 69:4(2020), pp. 1294-1301. [10.1109/TIM.2019.2913717]
| Titolo: | Non-Conventional PJVS Exploiting First and Second Steps to Reduce Junctions and Bias Lines | |
| Autori: | ||
| Data di pubblicazione: | 2020 | |
| Rivista: | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/TIM.2019.2913717 | |
| Abstract: | Quantum digital-to-analog converters (DACs) based on programmable Josephson array [Programmable J...osephson Voltage Standard (PJVS)] represent the most widely used quantum standard in ac voltage calibrations. The extension of PJVS frequency above the kilohertz range appears to be arduous; however, some enhancements are still practicable. In this work, we demonstrate the possibility to advantageously operate a conventional binary-divided PJVS array with a reduced number of bias lines. This feature is achieved by exploiting both the first and the second Shapiro steps along with nonconventional DAC codings. Two newly devised bias techniques are described in detail and preliminary experimental tests on waveform synthesis have been carried out and are presented here. | |
| Full-text (pubblici): | open | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11696/65628
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