[Tu-P2-F] Quantum Sensing and Photonics with Solid-State Defects

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[Tu-P2-F-04] Giant Isotope Effect on the Excited-State Lifetime and Emission Efficiency of the Silicon T Center

〇Moein Kazemi^1,2, Mehdi Keshavarz^1,2, Mark E. Turiansky⁴, John L. Lyons⁴, Nikolay V. Abrosimov³, Stephanie Simmons^1,2, Daniel B. Higginbottom^1,2, Mike L. W. Thewalt¹ (1. Simon Fraser University (Canada), 2. Photonic Inc (Canada), 3. Leibniz Institute for Crystal Growth (Germany), 4. United States Naval Research Laboratory (USA))

We report a giant isotope effect in the silicon T centre. Replacing protium with deuterium in the T centre strongly suppresses non-radiative decay, increasing the excited-state lifetime and yielding near-unity quantum efficiency. These results establish the deuterium T centre as a promising spin–photon interface for silicon quantum technologies.