Freiburg 2019 – scientific programme

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FM: Fall Meeting

FM 85: Poster: Enabling Technologies: Cavity QED

FM 85.2: Poster

Thursday, September 26, 2019, 16:30–18:30, Tents

Towards a coherent spin photon interface for quantum repeaters using NV centers in diamond — •Maximilian Pallmann¹, Rainer Stöhr², Eugen Vasilenko¹, and David Hunger¹ — ¹Karlsruher Institut für Technologie — ²Universität Stuttgart

Building a long distance quantum network is one of the big challenges in the field of quantum communication, which requires the development of a quantum repeater. A crucial component of this is an efficient, coherent spin photon interface, and coupling single Nitrogen Vacancy centers to a microcavity is a promising approach therefor. In our experiment, we integrate a diamond membrane to an open access fiber-based Fabry-Perot microcavity to increase the weak emission into the Zero Phonon Line (ZPL) of NV centers. Simulations predict the feasibility of a strong enhancement of the ZPL emission efficiency, reaching values of up to 80%. We present a spatially resolved characterization of a coupled cavity-membrane device and report on the current status of the experiment.