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https://hdl.handle.net/2440/136038
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DC Field | Value | Language |
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dc.contributor.author | De Simoni, G. | - |
dc.contributor.author | Ligato, N. | - |
dc.contributor.author | Giazotto, F. | - |
dc.contributor.author | Cassola, L. | - |
dc.contributor.author | Tettamanzi, G.C. | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Physical Review Applied, 2022; 18(1):1-8 | - |
dc.identifier.issn | 2331-7019 | - |
dc.identifier.issn | 2331-7019 | - |
dc.identifier.uri | https://hdl.handle.net/2440/136038 | - |
dc.description.abstract | Superconducting double-loop interferometers (bi-SQUIDs) have been introduced to produce magnetic flux sensors specifically designed to exhibit an ultrahighly linear voltage response as a function of the magnetic flux. These devices are very important for quantum sensing and for signal processing of signals oscillating in the radio-frequency range of the electromagnetic spectrum. Here, we report an Al doubleloop bi-SQUID based on proximitized mesoscopic Cu Josephson junctions. Such a scheme provides an alternative fabrication approach to conventional tunnel-junction-based interferometers, where the junction characteristics and, consequently, the magnetic-flux-to-voltage and magnetic-flux-to-critical-current device responses can be largely and easily tailored by the geometry of the metallic weak links. We discuss the performance of such sensors by showing a full characterization of the device switching current and voltage drop versus the magnetic flux for operation temperatures ranging from 30 mK to approximately 1 K. The figures of merit of the transfer function and of the total harmonic distortion are also discussed. The latter provides an estimate of the linearity of the flux-to-voltage device response, which attains values as large as 45 dB. Such a result lets us foresee a performance already on par with that achieved in conventional tunnel-junction-based bi-SQUIDs arrays composed of hundreds of interferometers. | - |
dc.description.statementofresponsibility | Giorgio De Simoni, Nadia Ligato, Francesco Giazotto, Lorenzo Cassola, and Giuseppe C. Tettamanzi | - |
dc.language.iso | en | - |
dc.publisher | American Physical Society (APS) | - |
dc.rights | © 2022 American Physical Society | - |
dc.source.uri | http://dx.doi.org/10.1103/physrevapplied.18.014073 | - |
dc.subject | Condensed matter; Nanostructures; SQUID | - |
dc.title | Ultrahigh Linearity of the Magnetic-Flux-to-Voltage Response of Proximity-Based Mesoscopic Bi-SQUIDs | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1103/physrevapplied.18.014073 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Tettamanzi, G.C. [0000-0002-3209-0632] | - |
Appears in Collections: | IPAS publications |
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