@article{oai:repo.qst.go.jp:00084897,
 author = {P. Anderson, Christopher and O. Glen, Elena and Zeledon, Cyrus and Bourassa, Alexandre and Jin, Yu and Zhu, Yizhi and Vorwerk, Christian and L. Crook, Alexander and Hiroshi, Abe and Jawad, Ul-Hassan and Takeshi, Ohshima and T. Son, Nguyen and Galli, Giulia and D. Awschalom, David and Hiroshi, Abe and Takeshi, Ohshima},
 issue = {5},
 journal = {Science Advances},
 month = {Feb},
 note = {An outstanding hurdle for defect spin qubits in silicon carbide (SiC) is single-shot readout, a deterministic measurement of the quantum state. Here, we demonstrate single-shot readout of single defects in SiC via spin-tocharge
conversion, whereby the defect’s spin state is mapped onto a long-lived charge state. With this technique, we achieve over 80% readout fidelity without pre- or postselection, resulting in a high signal-to-noise ratio that enables us to measure long spin coherence times. Combined with pulsed dynamical decoupling sequences in an isotopically purified host material, we report single-spin T2 > 5 seconds, over two orders of magnitude greater than previously reported in this system. The mapping of these coherent spin states onto single charges unlocks
both single-shot readout for scalable quantum nodes and opportunities for electrical readout via integration with semiconductor devices.},
 title = {Five-second coherence of a single spin with single-shot readout in silicon carbide},
 volume = {8},
 year = {2022}
}