1. Coupling of a locally implanted rare-earth ion ensemble to a superconducting micro-resonator.
- Author
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Wisby, I., de Graaf, S. E., Gwilliam, R., Adamyan, A., Kubatkin, S. E., Meeson, P. J., Tzalenchuk, A. Ya., and Lindström, T.
- Subjects
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RARE earth ions , *SUPERCONDUCTORS , *GADOLINIUM compounds , *NIOBIUM nitride , *RESONATORS , *NUMERICAL analysis - Abstract
We demonstrate the coupling of rare-earth ions locally implanted in a substrate (Gd3+ in Al2O3) to a superconducting NbN lumped-element micro-resonator. The hybrid device is fabricated by a con-trolled ion implantation of rare-earth ions in well-defined micron-sized areas, aligned to lithograph-ically defined micro-resonators. The technique does not degrade the internal quality factor of the resonators which remain above 105. 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 [ABSTRACT FROM AUTHOR]
- Published
- 2014
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