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Anderson, Christopher P; Bourassa, Alexandre; Miao, Kevin C; Wolfowicz, Gary; Mintun, Peter J; Crook, Alexander L; Abe, Hiroshi; Ul Hassan, Jawad; Son, Nguyen T; Ohshima, Takeshi; Awschalom, David D
Science (American Association for the Advancement of Science), 12/2019, Volume: 366, Issue: 6470Journal Article
Spin defects in silicon carbide have the advantage of exceptional electron spin coherence combined with a near-infrared spin-photon interface, all in a material amenable to modern semiconductor fabrication. Leveraging these advantages, we integrated highly coherent single neutral divacancy spins in commercially available p-i-n structures and fabricated diodes to modulate the local electrical environment of the defects. These devices enable deterministic charge-state control and broad Stark-shift tuning exceeding 850 gigahertz. We show that charge depletion results in a narrowing of the optical linewidths by more than 50-fold, approaching the lifetime limit. These results demonstrate a method for mitigating the ubiquitous problem of spectral diffusion in solid-state emitters by engineering the electrical environment while using classical semiconductor devices to control scalable, spin-based quantum systems.
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