Characterization of a Josephson array for pulse-driven voltage standard in a cryocooler
•A cryocooled pulsed Josephson standard is presented.•Cryocoolers allow simpler operation and can reduce cables, increasing signal accuracy.•Results are discussed analyzing the spectra of signals and comparing with observations in liquid helium. Pulse-driven Josephson junctions allow the synthesis o...
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| Veröffentlicht in: | Measurement : journal of the International Measurement Confederation 2017-01, Vol.95, p.77-81 |
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| container_title | Measurement : journal of the International Measurement Confederation |
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| creator | Sosso, A. Durandetto, P. Trinchera, B. Kieler, O. Behr, R. Kohlmann, J. |
| description | •A cryocooled pulsed Josephson standard is presented.•Cryocoolers allow simpler operation and can reduce cables, increasing signal accuracy.•Results are discussed analyzing the spectra of signals and comparing with observations in liquid helium.
Pulse-driven Josephson junctions allow the synthesis of very precise both spectrally pure and arbitrary wave forms with frequencies up to the megahertz range. We investigated the properties relevant for metrological applications of series arrays with 4000 Josephson junctions fabricated at PTB in cryocooler and liquid helium. DC electrical parameters were evaluated and Shapiro steps dependence on operating conditions was studied. Both cooling techniques provided similar results for all relevant parameters. In particular, we were able to observe Shapiro step widths of more than 1mA in cryocooler. Yet, we found that some specific effects related to the different thermal conditions must be taken into account for proper operation in cryocooler. |
| doi_str_mv | 10.1016/j.measurement.2016.09.039 |
| format | Article |
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Pulse-driven Josephson junctions allow the synthesis of very precise both spectrally pure and arbitrary wave forms with frequencies up to the megahertz range. We investigated the properties relevant for metrological applications of series arrays with 4000 Josephson junctions fabricated at PTB in cryocooler and liquid helium. DC electrical parameters were evaluated and Shapiro steps dependence on operating conditions was studied. Both cooling techniques provided similar results for all relevant parameters. In particular, we were able to observe Shapiro step widths of more than 1mA in cryocooler. Yet, we found that some specific effects related to the different thermal conditions must be taken into account for proper operation in cryocooler.</description><identifier>ISSN: 0263-2241</identifier><identifier>EISSN: 1873-412X</identifier><identifier>DOI: 10.1016/j.measurement.2016.09.039</identifier><language>eng</language><publisher>London: Elsevier Ltd</publisher><subject>Dependence ; Electrical junctions ; Frequencies ; Heat conductivity ; Josephson effect ; Josephson junctions ; Liquid helium ; Measurement techniques ; Measurement uncertainty ; Parameters ; Precision measurements ; Quantum voltage standard ; Quantum waveform synthesis ; Uncertainty ; Voltammetry ; Waveform analysis</subject><ispartof>Measurement : journal of the International Measurement Confederation, 2017-01, Vol.95, p.77-81</ispartof><rights>2016 Elsevier Ltd</rights><rights>Copyright Elsevier Science Ltd. Jan 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c400t-5262869e49b21ffd1bf4441cfb27c8a52b376a93e04ac603203821fd78c4f1d93</citedby><cites>FETCH-LOGICAL-c400t-5262869e49b21ffd1bf4441cfb27c8a52b376a93e04ac603203821fd78c4f1d93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.measurement.2016.09.039$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids></links><search><creatorcontrib>Sosso, A.</creatorcontrib><creatorcontrib>Durandetto, P.</creatorcontrib><creatorcontrib>Trinchera, B.</creatorcontrib><creatorcontrib>Kieler, O.</creatorcontrib><creatorcontrib>Behr, R.</creatorcontrib><creatorcontrib>Kohlmann, J.</creatorcontrib><title>Characterization of a Josephson array for pulse-driven voltage standard in a cryocooler</title><title>Measurement : journal of the International Measurement Confederation</title><description>•A cryocooled pulsed Josephson standard is presented.•Cryocoolers allow simpler operation and can reduce cables, increasing signal accuracy.•Results are discussed analyzing the spectra of signals and comparing with observations in liquid helium.
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| ispartof | Measurement : journal of the International Measurement Confederation, 2017-01, Vol.95, p.77-81 |
| issn | 0263-2241 1873-412X |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Dependence Electrical junctions Frequencies Heat conductivity Josephson effect Josephson junctions Liquid helium Measurement techniques Measurement uncertainty Parameters Precision measurements Quantum voltage standard Quantum waveform synthesis Uncertainty Voltammetry Waveform analysis |
| title | Characterization of a Josephson array for pulse-driven voltage standard in a cryocooler |
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