| 研究課題/領域番号 |
21K13868
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分13020:半導体、光物性および原子物理関連
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| 研究機関 | 国立研究開発法人物質・材料研究機構 |
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研究代表者 |
KARANIKOLAS Vasileios 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, NIMSポスドク研究員 (50868320)
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| 研究期間 (年度) |
2021-04-01 – 2023-03-31
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| 研究課題ステータス |
中途終了 (2022年度)
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| 配分額 *注記 |
4,290千円 (直接経費: 3,300千円、間接経費: 990千円)
2023年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2022年度: 1,820千円 (直接経費: 1,400千円、間接経費: 420千円)
2021年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
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| キーワード | Quantum light / Color centers / 2D materials / Quantum optics / Localized plasmons / Ultrafast operation / Ultrabright source / Purcell factor / Quantum materials / Surface plasmons / Nanoantenna / Nano-photonics |
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| 研究開始時の研究の概要 |
Quantum light sources are slow and their signal is weak, limiting their functionality for future applications. Placing the quantum sources in a photonic cavity, we accelerate their operation and brightness. Novel theoretical and fabrication techniques are used to realize the photonic cavity.
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| 研究実績の概要 |
Carbon enriched hexagonal boron nitride (hBN) bulk crystal is exfoliated to hBN nanosheets on a Si/SiO2 substrate. We focus on the color-center (CC) emission peak at 804nm, which preserves its emission properties up to room temperatures while presenting a fast operation with a lifetime of 300ps.
Through numerical simulations we choose Ag triangle nanoparticles (NPs) that support a localized plasmon resonance at 800nm. We place them on top of a Si/SiO2 substrate.
We mechanically transfer a hBN nanosheet, of 30nm thickness, on top of the Ag nanoparticles. The near-field of the CCs excites the plasmon modes of the Ag NP. Then, the CCs lifetime is reduced from 300ps to below 50ps and the CC's signal is enhanced. Hence, the CC/Ag NP combined system presents an ultrafast and ultrabright operation.
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