Probing local electronic and spin states in semiconductor microstructures by single-lead quantum dots
| Project/Area Number |
25800173
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
OTSUKA Tomohiro 独立行政法人理化学研究所, 創発物性科学研究センター, 特別研究員 (50588019)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 量子ドット / メゾスコピック系 / マイクロ・ナノデバイス / 局所プローブ / 半導体微細構造 / 量子細線 / 量子ホール効果 / ナノ・マイクロデバイス / 量子ポイントコンタクト |
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| Outline of Final Research Achievements |
We measured local electronic and spin states in semiconductor microstructures by probes utilizing quantum microstructures. We analyzed experimental results on the measurement of energy relaxation in quantum Hall edge states by quantum point contacts and revealed a possible mechanism of the probe operation. We developed new fast local electronic probes, which can access dynamics of local electronic and spin states, by using the quantum dot probes and high frequency measurement techniques. We applied these new probes to measure local electronic states in quantum dots and confirmed the operation and examined the characteristics.
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Report
(3 results)
Research Products
(25 results)
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[Presentation] Realization of a Fast Single-lead Quantum Dot Probe and Evaluation of the Properties by Probing Quantum Dot States2015
Author(s)
Tomohiro Otsuka, Shinichi Amaha, Takashi Nakajima, Matthieu R. Delbecq, Jun Yoneda, Kenta Takeda, Retsu Sugawara, Arne Ludwig, Andreas D. Wieck, and Seigo Tarucha
Organizer
International Conference on Electronic Properties of Two-Dimensional Systems
Place of Presentation
Sendai, Japan
Year and Date
2015-07-27
Related Report
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[Presentation] Vanishing Influence from Nuclear Spins on Strongly Driven Single Electron Spins in Quantum Dots2015
Author(s)
Jun Yoneda*, Tomohiro Otsuka*, Takashi Nakajima, Tatsuki Takakura, Toshiaki Obata, Michel Pioro-Ladrière, Hong Lu, Christopher Palmstrøm, Arthur C. Gossard, and Seigo Tarucha
Organizer
International Symposium on Quantum System and Nuclear Spin Related Phenomena
Place of Presentation
Zao, Japan
Year and Date
2015-02-19
Related Report
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[Presentation] Scaling-up Spin Qubits in Semiconductor Quantum Dots
Author(s)
Takashi Nakajima, Tomohiro Otsuka, Matthieu R. Delbeq, Shinichi Amaha, Jun Yoneda, Akito Noiri, Kenta Takeda, Jun Kamioka, Retsu Sugawara, John Watson, Michael J. Manfra, Andreas D. Wieck, and S. Tarucha
Organizer
FIRST International Symposium on Topological Quantum Technology
Place of Presentation
Tokyo, Japan
Related Report
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[Presentation] Direct phase control of a single spin qubit
Author(s)
Jun Yoneda*, Tomohiro Otsuka*, Takashi Nakajima, Tatsuki Takakura, Toshiaki Obata, Hong Lu, Christopher Palmstrom, Arthur C. Gossard, and Seigo Tarucha (*equal contribution)
Organizer
International School and Conference on Spintronics and Quantum Information Technology
Place of Presentation
Chicago, U.S.A.
Related Report
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[Presentation] Coherent dynamics of a strongly driven single electron spin
Author(s)
Jun Yoneda*, Tomohiro Otsuka*, Takashi Nakajima, Tatsuki Takakura, Toshiaki Obata, Hong Lu, Christopher Palmstrom, Arthur C. Gossard, and Seigo Tarucha (*equal contribution)
Organizer
International Conference on Electronic Properties of Two-dimentional Systems
Place of Presentation
Wroclaw, Poland
Related Report
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