SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 25: Solid State Quantum Optics
Q 25.4: Vortrag
Mittwoch, 8. März 2023, 11:45–12:00, E001
Super-Poissonian Light Statistics from Individual Silicon Vacancy Centers Coupled to a Laser-Written Diamond Waveguide — •Michael K. Koch1,2, Michael Hoese1, Vibhav Bharadwaj1,3, Johannes Lang1, John P. Hadden4, Roberta Ramponi3, Fedor Jelezko1,2, Shane M. Eaton3, and Alexander Kubanek1,2 — 1Ulm University, D-89081 Ulm, Germany — 2IQst, Ulm University, D-89081 Ulm, Germany — 3Institute for Photonics and Nanotechnologies (IFN) - CNR, Milano 20133, Italy — 4School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, United Kingdom
Light field engineering on the single photon level is a key challenge for future quantum technology. Ideally, it will be realized with integrated quantum photonics to ensure robustness and scalability. Here we present a system that combines single silicon vacancy centers (SiVs) with laser-written type II waveguides [1] in diamond. Typically, these waveguides exhibit low cooperativity at the single photon level due to their large mode volume. To overcome this limitation, we use a novel operational technique of waveguide-assisted detection and high numerical aperture excitation of SiV centers to achieve a strong non-linearity at the single photon level. We demonstrate single-emitter extinction measurements with a cooperativity of 0.0050 and a relative beta factor of 13% [2].
[1] M. Hoese et al., Phys. Rev. Applied 15, 054059 (2021)
[2] M. K. Koch et al., ACS Photonics 9, 3366-3373 (2022)