Diamond photonics platform based on silicon vacancy centers in a single-crystal diamond membrane and a fiber cavity

Haeussler, Stefan; Benedikter, Julia; Bray, Kerem; Regan, Blake; Dietrich, Andreas; Twamley, Jason; Aharonovich, Igor; Hunger, David und Kubanek, Alexander (2019): Diamond photonics platform based on silicon vacancy centers in a single-crystal diamond membrane and a fiber cavity. In: Physical Review B, Bd. 99, Nr. 16, 165310

Abstract

We realize a potential platform for an efficient spin-photon interface, namely negatively-charged silicon-vacancy centers in a diamond membrane coupled to the mode of a fully-tunable, fiber-based, optical resonator. We demonstrate that introducing the thin (similar to 200 nm), single crystal diamond membrane into the mode of the resonator does not change the cavity properties, which is one of the crucial points for an efficient spin-photon interface. In particular, we observe constantly high Finesse values of up to 3000 and a linear dispersion in the presence of the membrane. We observe cavity-coupled fluorescence from an ensemble of SiV- centers with an enhancement factor of similar to 1.9. Furthermore from our investigations we extract the ensemble absorption and extrapolate an absorption cross section of (2.9 +/- 2) x 10(-12) cm(2) for a single SiV- center, much higher than previously reported.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 2469-9950
• Sprache: Englisch