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arXiv · 2203.11304

On-Chip Detection of Electronuclear Transitions in the $^{155,157}$Gd Multilevel Spin System

G. Franco-Rivera·J. Cochran·L. Chen·S. Bertaina·I. Chiorescu
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Abstract

The properties of rare-earth elements diluted in non-magnetic crystals make them a promising candidate for a quantum memory due to their limited Hilbert space. The control and readout of the qubit states require a highly sensitive measurement and large coupling of the spin ensemble with the electro-magnetic mode of a superconducting resonator. We report sensitive detection of forbidden transitions of electronuclear states from the minority species of $^{155}$Gd and $^{157}$Gd isotopes which opens the possibility of connecting quantum states with very different spin projections. Cavity perturbation measurements seen in the reflected signal allows the detection of about 7.6$\times10^{7}$ spins and the measurement of spin decoherence rate and spin-photon coupling strength.

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G. Franco-Rivera, J. Cochran, L. Chen, S. Bertaina, I. Chiorescu. 2022-03-21. On-Chip Detection of Electronuclear Transitions in the $^{155,157}$Gd Multilevel Spin System. https://doi.org/10.1103/physrevapplied.18.014054

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