Diamond quantum nano-sensor with high sensitivity and high resolution
| Project/Area Number |
16H02088
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanomaterials engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
Yamasaki Satoshi 国立研究開発法人産業技術総合研究所, 先進パワーエレクトロニクス研究センター, 総括研究員 (80358241)
Kato Hiromitsu 国立研究開発法人産業技術総合研究所, 先進パワーエレクトロニクス研究センター, 主任研究員 (00415655)
Tokuda Norio 金沢大学, 電子情報学系, 教授 (80462860)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥43,030,000 (Direct Cost: ¥33,100,000、Indirect Cost: ¥9,930,000)
Fiscal Year 2018: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2017: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Fiscal Year 2016: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
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| Keywords | ダイヤモンド / 量子センサ / NV中心 / コヒーレンス時間 / T2 / NVセンタ / 量子技術 / 磁気センサ / 量子センシング / NMR / 磁気共鳴 / 量子エレクトロニクス |
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| Outline of Final Research Achievements |
Solid-state single spins are promising resources for quantum sensing, quantum-information processing and quantum networks, because they are compatible with scalable quantum-device engineering. Here, we demonstrate the synthesis and application of phosphorus-doped n-type single-crystal chemical vapour deposition diamond with remarkably long spin-coherence times. Contrary to widespread belief, the doping with an impurity (phosphorus) reduced the magnetic noise from the residual paramagnetic defects. Being placed in such a spin-free lattice, single electron spins show the longest inhomogeneous spin-dephasing time and Hahn-echo spin-coherence time ever observed in room-temperature solid-state systems. Also, we show that they have the best magnetic-field sensitivity with a single electron spin at room temperature. From analysing the noise spectrum, while not being limited by nuclear spins, the decoherence is probably dominated by residual impurities and defects.
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| Academic Significance and Societal Importance of the Research Achievements |
これまでNV中心は電気を通さない絶縁体ダイヤモンドで主に研究されてきた。今回、リンをドープしたダイヤモンド半導体中のNV中心で、固体系で室温において最長となるコヒーレンス時間を達成した事は、今後の半導体デバイス応用という観点から意義深い。医療分野、化学物質構造解析分野、各種電子デバイス評価センサ分野等への応用が期待されるNV中心において、将来の超高感度量子センサの実現、及び更なる高感度化へ貢献したという観点から、本研究成果の社会的意義は大きいと言える。また磁気ノイズ源となりえるリンをドープしたにも拘わらず、コヒーレンス時間が伸びた点は学術的に重要で、ダイヤモンド高品質化に貢献する結果である。
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Report
(5 results)
Research Products
(48 results)
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[Journal Article] Optimization of temperature sensitivity using the optically detected magnetic-resonance spectrum of a nitrogen-vacancy center ensemble2018
Author(s)
K. Hayashi, Y. Matsuzaki, T. Taniguchi, T. Shimo-Oka, I. Nakamura, S. Onoda, T. Ohshima, H. Morishita, M. Fujiwara, S. Saito, N. Mizuochi
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Journal Title
Physical Review Applied
Volume: 10
Issue: 3
DOI
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Peer Reviewed
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[Presentation] Ultra-long Coherence Times of NV Centres in n-type Diamond2019
Author(s)
Ernst David Herbschleb, Hiromitsu Kato, Yuichi Maruyama, Takuya Danjo, Toshiharu Makino, Satoshi Yamasaki, Izuru Ohki, Kan Hayashi, Hiroki Morishita, Masanori Fujiwara, Norikazu Mizuochi
Organizer
IFQS2019
Related Report
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[Presentation] Best magnetic-field sensitivities with single NV centres at room temperature2019
Author(s)
E. D. Herbschleb, H. Kato, Y. Maruyama, T. Danjo, T. Makino, S. Yamasaki, I. Ohki, K. Hayashi, H. Morishita, M. Fujiwara, N. Mizuochi
Organizer
第66回応用物理学会春季学術講演会
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[Presentation] Control of Charge States of NV Center by Nin Diamond Junction2016
Author(s)
Takuya Murai, Toshiharu Makino, Hiromitsu Kato, Yuki Doi, Yoshishige Suzuki, Mutsuko Hatano, Satoshi Yamasaki, Maki Shimizu, Hiroki Morishita,
Organizer
MRS Fall Meeting & Exhibit
Place of Presentation
Boston, USA
Year and Date
2016-11-30
Related Report
Int'l Joint Research
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[Presentation] Control of charge states of NV center in diamond by nin junction2016
Author(s)
T. Murai, T. Makino, H. Kato, Y. Doi, Y. Suzuki, M. Hatano, S. Yamazaki, M. Shimizu, H. Morishita, M. Fujiwara, N. Mizuochi
Organizer
PASPS9
Place of Presentation
Kobe, Japan
Year and Date
2016-08-07
Related Report
Int'l Joint Research
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