SAMOP 2021 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 12: Quantum Technology
Q 12.1: Poster
Wednesday, September 22, 2021, 16:30–18:30, P
Nanofabricated and integrated colour centres in SiC with excellent spin-optical coherence — •Florian Kaiser1, Charles Babin1, Rainer Stöhr1, Naoya Morioka1, Tobias Linkewitz1, Timo Steidl1, Raphael Wörnle1, Di Liu1, Erik Hesselmeier1, Vadim Vorobyov1, Andrej Denisenko1, Mario Hentschel1, Christian Gobert2, Patrick Berwian2, Georgy Astakhov3, Wolfgang Knolle4, Sridhar Majety5, Pranta Saha5, Marina Radulaski5, Nguyen Tien Son6, Jawad Ul-Hassan6, and Jörg Wrachtrup1 — 1Universität Stuttgart, Germany — 2Fraunhofer IISB, Erlangen, Germany — 3HZDR, Dresden, Germany — 4IOM, Leipzig, Germany — 5University of California, Davis, USA — 6Linköping University, Sweden
We demonstrate that silicon vacancy (VSi) centres in semiconductor silicon carbide (SiC) are prime candidates for scalable integration into nanophotonic cavities. To this end, we show:
1.) Low-energy ion-assisted implantation without degradation of spin-optical coherences.
2.) Reliable operation of VSi centres in nanophotonic waveguides with little to no degradation of spin-optical coherences.
3.) Operation of VSi centres at high temperatures (T=20 K), while coherently controlling multiple nuclear spin qubits with near unity fidelity.
Our work represents a major step forward towards integrated multi-spin-multi- photon interfaces for distributed quantum computation and communication.