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Q: Fachverband Quantenoptik und Photonik

Q 46: Nano-Optics (Single Quantum Emitters) II

Q 46.5: Vortrag

Donnerstag, 12. März 2020, 15:00–15:15, a310

Cavity coupled nano scale quantum emitter for integrated photonic circuits — •Philip P.J. Schrinner¹, Jan Olthaus², Doris Reiter², and Carsten Schuck¹ — ¹Physikalisches Institut and Center for Nanotechnology, WWU Münster, Germany — ²Institut für Festkörpertheorie, Universität Münster, 48149 Münster, Germany

Integrated quantum photonics with single photons in nano-photonic waveguides is a promising approach for quantum sensing, computing and communication. Despite current nano-technological advances, efficient and scalable coupling of single-photon sources to photonic integrated circuits remains a major hurdle. Here, we employ 1D photonic crystal cavities for efficiently interfacing NV centers in nano-diamonds with nano-photonic waveguides [1]. We fabricate nano-photonic devices from Ta2O5 thin films, use a lithographic technique for precise emitter-positioning and characterize the coupling via lifetime measurements. We find Q-factors of several thousands and lifetime reductions for single NV centers by a factor of three due to the Purcell effect. Our work paves the way for integrating large numbers of single emitters into nano-photonic networks for complex quantum optics experiments. [1] Olthaus et al., Adv. Quantum Technol. 2019, 1900084