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

Abstract

We demonstrate the coupling of rare-earth ions locally implanted in a substrate (Gd${}^{3+}$ in Al${}_2$O${}_3$) 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 $10^5$. 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.

4 pages, 2 Figures

References in corpus (7)

• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Room temperature quantum bit storage exceeding 39 minutes using ionized donors in 28-silicon
• Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity
• Quantum computing with an electron spin ensemble
• Remote preparation of an atomic quantum memory
• Magnetic field tuning of coplanar waveguide resonators
• Slow noise processes in superconducting resonators

Cited by in corpus (5)

• Quantum amplification and simulation of strong and ultrastrong coupling of light and matter
• Hybrid quantum circuit with implanted erbium ions
• Quantum Error Correction with magnetic molecules
• On-Chip Detection of Electronuclear Transitions in the ${}^{155,157}$Gd Multilevel Spin System
• Erbium implanted silicon for solid-state quantum technologies