Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 31: Quantum Networks, Repeaters, and QKD III (joint session Q/QI)
Q 31.3: Talk
Wednesday, March 12, 2025, 11:30–11:45, AP-HS
Large-Range Tuning and Stabilization of the Optical Transition of Diamond Tin-Vacancy Centers by In-Situ Strain Control — •Julia M. Brevoord1, Leonardo G. C. Wienhoven1, Nina Codreanu1, Tetsuro Ishiguro1,2, Elvis van Leeuwen1, Mariagrazia Iuliano1, Lorenzo DeSantis1, Christopher Waas1, Hans K.C. Beukers1, Tim Turan1, Carlos Errando-Herranz1,3, Kenichi Kawaguchi2, and Ronald Hanson1 — 1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft 2628 CJ, Netherlands — 2Quantum Laboratory, Fujitsu Limited, 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan — 3Department of Quantum and Computer Engineering, Delft University of Technology, Delft 2628 CJ, Netherlands
Quantum technologies, such as quantum networking based on photonic links rely on entanglement generation via indistinguishable photons from the qubits. The tin-vacancy (SnV) center in diamond has emerged as a promising platform, offering good optical and spin properties. However, variations in local strain and electronic environments have posed significant challenges to photon indistinguishability, limiting scalability. In this work, we achieve large-range optical frequency tuning and active stabilization of SnV centers using micro-electromechanical strain control integrated into photonic waveguide devices. These results represent a critical step forward in overcoming scalability challenges and enabling the development of robust, large-scale quantum networks.
Keywords: Diamond Color Centers; Quantum Networks; Frequency tuning; Solid state physics