Spin amplification with a high gain
| Project/Area Number |
24740273
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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 |
Atomic/Molecular/Quantum electronics
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| Research Institution | Osaka University |
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Principal Investigator |
NEGORO Makoto 大阪大学, 基礎工学研究科, 助教 (70611549)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Keywords | スピン増幅（スピンアンプ） / 核磁気共鳴（NMR) / 動的核偏極（DNP) / 光励起三重項 / ペンタセン（pentacene） / p-ターフェニル（p-terphenyl） / ハミルトニアンエンジニアリング / スピン格子緩和（T1) / スピン格子緩和（T1） / 量子非破壊測定(QND) / 核磁気共鳴（NMR） / スピン拡散 |
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| Research Abstract |
We have demonstrated amplification of Ramsey spectroscopy signals with the gain of more than 10 at room temperature. Using dynamic nuclear polarization with photo-excited triplet electrons, we have achieved polarization of 34% at room temperature. These mean that the sensitivity enhancement of more than 100,000 will be capable with the combination of spin amplification and dynamic nuclear polarization. Using 1-13C-1-fluoro-p-terphenyl, we have implemented non-destructive spin amplification with the gain of 14. We have proposed a method to make a pulse for quantum gate with a high fidelity based on average Hamiltonian theory and optimal control theory. We have proposed a quantum circuit of regenerative spin amplification, which is scalable to a higher gain if the gate fidelity and the initial polarization are beyond thresholds.
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Report
(3 results)
Research Products
(53 results)
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[Presentation] 高速なスピン増幅の実装2012
Author(s)
根来誠、立石健一郎、香川晃徳、北川勝浩
Organizer
日本物理学会秋季大会
Place of Presentation
横浜国立大学(口頭発表)
Year and Date
2012-09-18
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