Long spin coherence times in the ground state and an optically excited state of ${}^{167}$Er${}^{3+}$:Y${}_2$SiO${}_5$ at zero magnetic field

Jelena V. Rakonjac, Yu-Hui Chen, Sebastian P. Horvath +1

Spins in solids are an ideal candidate to act as a memory and interface with superconducting qubits due to their long coherence times. We spectroscopically investigate erbium-167-d…