Observation of an environmentally insensitive solid-state spin defect in diamond.
basic_science · Level V
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- Record sourced from PubMed, PMID 29976820.
- Also identified by DOI 10.1126/science.aao0290.
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Abstract
Engineering coherent systems is a central goal of quantum science. Color centers in diamond are a promising approach, with the potential to combine the coherence of atoms with the scalability of a solid-state platform. We report a color center that shows insensitivity to environmental decoherence caused by phonons and electric field noise: the neutral charge state of silicon vacancy (SiV<sup>0</sup>). Through careful materials engineering, we achieved >80% conversion of implanted silicon to SiV<sup>0</sup> SiV<sup>0</sup> exhibits spin-lattice relaxation times approaching 1 minute and coherence times approaching 1 second. Its optical properties are very favorable, with ~90% of its emission into the zero-phonon line and near-transform-limited optical linewidths. These combined properties make SiV<sup>0</sup> a promising defect for quantum network applications.