Coherent control of interacting solid-state spins below the diffraction limit

Demonstrates coherent control and an entangling gate between two frequency-resolved Er³⁺ electron spins in CaWO₄, together with electron–nuclear gates and a second-scale ${}^{183}$W ancilla memory.

Links

• Journal: Nature Physics 22, 1216–1222 (2026)
• arXiv: 2508.09122

Zoo Links

• rare-earth-ion-qubit