Controlled Stark shifts in Er${}^{3+}$-doped crystalline and amorphous waveguides for quantum state storage

Sara R. Hastings-Simon, Matthias U. Staudt, Mikael Afzelius +4

We present measurements of the linear Stark effect on the ${}^4$I${}_{15/2}\to$ ${}^4$I${}_{13/2}$ transition in an Er${}^{3+}$-doped proton-exchanged LiNbO${}_3$ crystalline waveguide…