Isotopically enriched epitaxial CaWO${}_4$ thin films for Er${}^{3+}$ spin-photon quantum interfaces

Hanlin Tang, Kidae Shin, Ashwin K. Boddeti +10

Rare earth ion (REI)-doped oxide thin films are attractive for the application of quantum interconnects due to their stable optical levels and scalability${}^{1-3}$. Among them, Er$^…