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

Abstract

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 and an Er${}^{3+}$-doped silicate fiber. The measurements were made using spectral hole burning techniques at temperatures below 4 K. We measured an effective Stark coefficient $(\Delta {\mu }_e\chi )/(h)=25\pm 1$kHz/Vcm${}^{-1}$ in the crystalline waveguide and $(\overline{\Delta {\mu }_e}\chi )/(h)=15\pm 1$kHz/Vcm${}^{-1}$ in the silicate fiber. These results confirm the potential of Erbium doped waveguides for quantum state storage based on controlled reversible inhomogeneous broadening.

arXiv comment4 pages, 2 figures v2. typo in formula corrected

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• Quantum Cryptography
• Photon Echoes Produced by Switching Electric Fields
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