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

• URL: http://arxiv.org/abs/2203.11304v2
• Date: Fri, 22 Jul 2022 18:42:05 GMT
• Title: On-Chip Detection of Electronuclear Transitions in the $^{155,157}$Gd Multilevel Spin System
• Authors: G. Franco-Rivera, J. Cochran, L. Chen, S. Bertaina, I. Chiorescu
• Abstract summary: Properties of rare-earth elements diluted in non-magnetic crystals make them a promising candidate for a quantum memory. We report sensitive detection of forbidden transitions of electronuclear states from the minority species of $155$Gd and $157$Gd isotopes.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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