skip to main content

SciTech ConnectSciTech Connect

Title: Coupling of a locally implanted rare-earth ion ensemble to a superconducting micro-resonator

We demonstrate the coupling of rare-earth ions locally implanted in a substrate (Gd{sup 3+} in Al{sub 2}O{sub 3}) to a superconducting NbN lumped-element micro-resonator. The hybrid device is fabricated by a controlled ion implantation of rare-earth ions in well-defined micron-sized areas, aligned to lithographically defined micro-resonators. The technique does not degrade the internal quality factor of the resonators which remain above 10{sup 5}. Using microwave absorption spectroscopy, we observe electron-spin resonances in good agreement with numerical modelling and extract corresponding coupling rates of the order of 1 MHz and spin linewidths of 50–65 MHz.
Authors:
;  [1] ;  [2] ; ; ;  [3] ;  [4] ;  [5] ;  [1]
  1. National Physical Laboratory, Hampton Road, Teddington TW11 0LW (United Kingdom)
  2. (United Kingdom)
  3. Department of Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-41296, Gothenburg (Sweden)
  4. Advanced Technology Institute, Faculty of Electronics and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)
  5. Royal Holloway, University of London, Egham TW20 0EX (United Kingdom)
Publication Date:
OSTI Identifier:
22310837
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 10; Other Information: (c) 2014 Crown; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; ALUMINIUM OXIDES; COUPLING; ELECTRON SPIN RESONANCE; GADOLINIUM IONS; ION IMPLANTATION; MICROWAVE RADIATION; NIOBIUM NITRIDES; QUALITY FACTOR; RARE EARTHS; RESONATORS; SPIN; SUBSTRATES