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Title: Hybrid quantum circuit with implanted erbium ions

We report on hybrid circuit quantum electrodynamics experiments with focused ion beam implanted Er{sup 3+} ions in Y{sub 2}SiO{sub 5} coupled to an array of superconducting lumped element microwave resonators. The Y{sub 2}SiO{sub 5} crystal is divided into several areas with distinct erbium doping concentrations, each coupled to a separate resonator. The coupling strength is varied from 5 MHz to 18.7 MHz, while the linewidth ranges between 50 MHz and 130 MHz. We confirm the paramagnetic properties of the implanted spin ensemble by evaluating the temperature dependence of the coupling. The efficiency of the implantation process is analyzed and the results are compared to a bulk doped Er:Y{sub 2}SiO{sub 5} sample. We demonstrate the integration of these engineered erbium spin ensembles with superconducting circuits.
Authors:
; ;  [1] ; ;  [2] ; ;  [3] ;  [1] ;  [4] ;  [5]
  1. Physikalisches Institut, Karlsruhe Institute of Technology, D-76128 Karlsruhe (Germany)
  2. Angewandte Festkörperphysik, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum (Germany)
  3. Institut für Mikro- und Nanoelektronische Systeme, Karlsruhe Institute of Technology, D-76189 Karlsruhe (Germany)
  4. (Russian Federation)
  5. Experimentalphysik, Universität des Saarlandes, D-66123 Saarbrücken (Germany)
Publication Date:
OSTI Identifier:
22350958
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COUPLING; CRYSTALS; DOPED MATERIALS; EFFICIENCY; ERBIUM IONS; HYBRID SYSTEMS; ION BEAMS; MHZ RANGE; MICROWAVE RADIATION; QUANTUM ELECTRODYNAMICS; RESONATORS; SPIN; TEMPERATURE DEPENDENCE; YTTRIUM SILICATES