Coupling erbium spins to a three-dimensional superconducting cavity at zero magnetic field

Abstract

We experimentally demonstrate the coupling at zero magnetic field of an isotopically pure erbium doped yttrium orthosilicate crystal (${}^{167}$Er:YSO) to a three-dimensional superconducting cavity with a $Q$ factor of $10^5$. A tunable loop-gap resonator is used, and its resonance frequency is tuned to observe the hyperfine transitions of the erbium sample. The observed spectrum differs from what is predicted by the published spin Hamiltonian parameters. The narrow cavity linewidth also enables the observation of asymmetric line shapes for these hyperfine transitions. Such a broadly tunable superconducting cavity (from 1.6 GHz to 4.0 GHz in the current design) is a promising device for building hybrid quantum systems.

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References in corpus (10)

• Quantum technologies with hybrid systems
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Superconducting qubit in waveguide cavity with coherence time approaching 0.1ms
• Ultrahigh finesse Fabry-Perot superconducting resonator
• A magneto-optic modulator with unit quantum effciency
• Anisotropic rare-earth spin ensemble strongly coupled to a superconducting resonator
• Coherent frequency up-conversion of microwaves to the optical telecommunications band in an Er:YSO crystal
• Coherent storage of microwave excitations in rare-earth nuclear spins
• 3D Cavity quantum electrodynamics with a rare-earth spin ensemble
• Hybrid quantum circuit with implanted erbium ions

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• Electron Spin Coherences in Rare-Earth Optically Excited States for Microwave to Optical Quantum Transducers
• Coherent spin dynamics of ytterbium ions in yttrium orthosilicate
• Spectroscopic study of hyperfine properties in ${}^{171}$Yb${}^{3+}$:Y${}_2$SiO${}_5$
• Multimode storage of quantum microwave fields in electron spins over 100 ms
• Hyperfine interactions of ${\text{Er}}^{3+}$ ions in ${\text{Y}}_2{\text{SiO}}_5$: electron paramagnetic resonance in a tunable microwave cavity
• Loop-gap Microwave Resonator for Hybrid Quantum Systems
• Cavity QED Based on Thermal Atoms Interacting with a Photonic Crystal Cavity: A Feasibility Study
• Piezospectroscopic measurement of high-frequency vibrations in a pulse-tube cryostat
• Superhyperfine induced photon-echo collapse of erbium in Y${}_2$SiO${}_5$
• Coherent optical-microwave interface for manipulation of low-field electronic clock transitions in ${}^{171}$Yb${}^{3+}$:Y${}_2$SiO${}_5$
• Electron Paramagnetic Resonance Spectroscopy of Er${}^{3+}$:Y${}_2$SiO${}_5$ Using Josephson Bifurcation Amplifier: Observation of Hyperfine and Quadrupole Structures
• Integrated optical quantum memory controlled by electro-optic effect
• Coherent control in the ground and optically excited state of an ensemble of erbium dopants
• Proposal for transduction between microwave and optical photons using ${}^{167}\mathrm{Er}$-doped yttrium orthosilicate
• Dielectric microwave resonator with large optical apertures for spin-based quantum devices
• Enhancement of optical coherence in ${}^{167}$Er:Y${}_2$SiO${}_5$ crystal at sub-Kelvin temperatures
• Limits to the sensitivity of a rare-earth-enabled cryogenic vibration sensor