Optically addressable nuclear spins in a solid with a six-hour coherence time

Summary

Demonstrates a coherence time of 6 hours for ${}^{151}{\text{Eu}}^{3+}$ nuclear spins in Y₂SiO₅ at 2 K, using a zero-first-order Zeeman (ZEFOZ) magnetic field and dynamical decoupling. Record solid-state coherence time by orders of magnitude. Decoherence rate measured at $8\times 10^{-5}{\text{s}}^{-1}$. Establishes rare-earth nuclear spins as the longest-lived solid-state quantum memory.

Cited In

• rare-earth-ion-qubit