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Five-second coherence of a single spin with single-shot readout in silicon carbide
https://repo.qst.go.jp/records/84897
https://repo.qst.go.jp/records/84897d6bc4f6d-3df9-43f8-9219-b4c1e4f02157
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-02-10 | |||||
| タイトル | ||||||
| タイトル | Five-second coherence of a single spin with single-shot readout in silicon carbide | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
P. Anderson, Christopher
× P. Anderson, Christopher× O. Glen, Elena× Zeledon, Cyrus× Bourassa, Alexandre× Jin, Yu× Zhu, Yizhi× Vorwerk, Christian× L. Crook, Alexander× Hiroshi, Abe× Jawad, Ul-Hassan× Takeshi, Ohshima× T. Son, Nguyen× Galli, Giulia× D. Awschalom, David× Hiroshi, Abe× Takeshi, Ohshima |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | 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. |
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| 書誌情報 |
Science Advances 巻 8, 号 5, p. eabm5912, 発行日 2022-02 |
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| 出版者 | ||||||
| 出版者 | American Association for Advancement of Science | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2375-2548 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1126/sciadv.abm5912 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.science.org/doi/10.1126/sciadv.abm5912 | |||||
