Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 23: Poster I
Q 23.30: Poster
Tuesday, March 12, 2024, 17:00–19:00, Tent B
A Fiber-based Microcavity Platform to Purcell-enhance Diamond Color Centers — •Yanik Herrmann1, Julius Fischer1, Julia M. Brevoord1, Stijn Scheijen1, Colin Sauerzapf1,2, Leonardo G. C. Wienhoven1, Laurens J. Feije1, Matteo Pasini1, Martin Eschen1,3, and Ronald Hanson1 — 1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, The Netherlands — 2Present address: 3rd Institute of Physics and Research Center SCoPE, University of Stuttgart, 70049 Stuttgart, Germany — 3Netherlands Organisation for Applied Scientific Research (TNO), P.O. Box 155, 2600 AD Delft, The Netherlands
Quantum networks are promising both for applications like secure communication and for basic science tests of quantum mechanics at a large scale. Color centers in diamond, like the Nitrogen- or Tin-Vacancy center are excellent node candidates, because of their optically accessible spin with a long coherence time, but the collection of coherent photons is limited. Integration into an optical cavity can boost both the coherent emission via the Purcell effect and the collection efficiency due to a well-defined cavity mode. Here we present a low temperature platform, which is in particular designed to provide a low vibration level while maintaining high flexibility over the cavity and fiber control. Such a system is expected to significantly speed up entanglement rates in present day networks, a critical step towards large scale quantum networks with solid state emitters.
Keywords: Diamond Color Centers; Microcavities; Purcell-Enhancement; Quantum Communication; Quantum Networks