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

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$\times 10^7$ spins and the measurement of spin decoherence rate and spin-photon coupling strength.

References in corpus (14)

• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Anisotropic rare-earth spin ensemble strongly coupled to a superconducting resonator
• Three addressable spin qubits in a molecular single-ion magnet
• Electron Spin Resonance at the Level of 10000 Spins Using Low Impedance Superconducting Resonators
• Electron spin ensemble strongly coupled to a three-dimensional microwave cavity
• Inductive-detection electron-spin resonance spectroscopy with $65$spins$/\sqrt{\text{Hz}}$ sensitivity
• Magnetic strong coupling in a spin-photon system and transition to classical regime
• Multiphoton coherent manipulation in large-spin qubits
• Coherent spin dynamics in gadolinium-doped CaWO4 crystal
• Hybrid quantum circuit with implanted erbium ions
• Sensitive spin detection using an on-chip SQUID-waveguide resonator
• Coupling of a locally implanted rare-earth ion ensemble to a superconducting micro-resonator
• Quantum dynamics of Mn${}^{2+}$ in dimethylammonium magnesium formate
• Forbidden coherent transfer observed between two realizations of quasi-harmonic spin system

Cited by in corpus (3)

• How to cross an energy barrier at zero Kelvin without tunneling effect
• Precision Multi-Mode Microwave Spectroscopy of Paramagnetic and Rare-Earth Ion Spin Defects in Single Crystal Calcium Tungstate
• Strong coupling of a Gd${}^{3+}$ multilevel spin system to an on-chip superconducting resonator