Hybrid quantum circuit with implanted erbium ions

Abstract

We report on hybrid circuit QED experiments with focused ion beam implanted Er${}^{3+}$ ions in Y${}_2$SiO${}_5$ coupled to an array of superconducting lumped element microwave resonators. The Y${}_2$SiO${}_5$ 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${}_2$SiO${}_5$ sample. We demonstrate the successful integration of these engineered erbium spin ensembles with superconducting circuits.

5 pages, 4 figures

References in corpus (7)

• Quantum Storage of Photonic Entanglement in a Crystal
• Opto-mechanical transducers for long-distance quantum communication
• Anisotropic rare-earth spin ensemble strongly coupled to a superconducting resonator
• NbTiN superconducting nanowire detectors for visible and telecom wavelengths single photon counting on Si3N4 photonic circuits
• Fast, low-power manipulation of spin ensembles in superconducting microresonators
• Photoluminescence of focused ion beam implanted Er${}^{3+}$:Y${}_2$SiO${}_5$ crystals
• Coupling of a locally implanted rare-earth ion ensemble to a superconducting micro-resonator

Cited by in corpus (7)

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• Multi-mode technique for the determination of the biaxial Y2SiO5 permittivity tensor from 300 to 6 Kelvin
• Rigorous numerical study of strong microwave photon-magnon coupling in all-dielectric magnetic multilayers
• Development of Yttrium alloy ion source and its application in nanofabrication