Kennedy, OW;
Burnett, J;
Fenton, JC;
Constantino, NGN;
Warburton, PA;
Morton, JJL;
Dupont-Ferrier, E;
(2019)
Tunable Nb Superconducting Resonator Based on a Constriction Nano- SQUID Fabricated with a Ne Focused Ion Beam.
Physical Review Applied
, 11
, Article 014006. 10.1103/PhysRevApplied.11.014006.
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Abstract
Hybrid superconducting-spin systems offer the potential to combine highly coherent atomic quantum systems with the scalability of superconducting circuits. To fully exploit this potential requires a high-quality-factor microwave resonator, tunable in frequency and able to operate at magnetic fields optimal for the spin system. Such magnetic fields typically rule out conventional Al -based Josephson-junction devices that have previously been used for tunable high- Q microwave resonators. The larger critical field of Nb allows microwave resonators with large field resilience to be fabricated. Here we demonstrate how constriction-type weak links, patterned in parallel into the central conductor of a Nb coplanar resonator with a neon focused ion beam, can be used to implement a frequency-tunable resonator. We study transmission through two such devices and show how they realize high-quality-factor, tunable, field-resilient devices that hold promise for future applications coupling to spin systems
| Type: | Article |
|---|---|
| Title: | Tunable Nb Superconducting Resonator Based on a Constriction Nano- SQUID Fabricated with a Ne Focused Ion Beam |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevApplied.11.014006 |
| Publisher version: | https://doi.org/10.1103/PhysRevApplied.11.014006 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10067203 |
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