| 研究課題/領域番号 |
13J10823
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 補助金 |
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| 応募区分 | 国内 |
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| 研究分野 |
物性Ⅰ(光物性・半導体・誘電体)(理論)
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| 研究機関 | 大阪府立大学 |
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研究代表者 |
ウエン デユイヴイ 大阪府立大学, 理学系研究科, 特別研究員(PD)
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| 研究期間 (年度) |
2013-04-01 – 2015-03-31
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| 研究課題ステータス |
完了 (2014年度)
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| 配分額 *注記 |
2,300千円 (直接経費: 2,000千円、間接経費: 300千円)
2014年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2013年度: 1,000千円 (直接経費: 1,000千円)
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| キーワード | laser cooling / optomechanical coupling / sensitive measurement / energy transfer / BEC / Exciton-polariton / FDTD / opto-mechanical coupling / super-sensitive measurement / semiconductor cooling / exciton photoluminescence / nanoparticles |
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| 研究実績の概要 |
a) Optomechanical system's dynamics controlled by light-induced force (LIF):
-stability conditions for oscillator and exactly general coupling G have been clarified. This G shows a collinear dependence on the cavity decay rate (kappa) preventing the cooling in good cavity limits and approximates to kappa for much smaller kappa. The fifth-order multistability in these optomechanical systems is figured out.
-minimum effective temperature T_eff shifts to low-kappa region and locates around kappa= 0.03 X the mechanical frequency. T_eff of about several tens of mK is possible and a quantum number of 0.01 can be obtained (the oscillator is 99% in the ground state). This shows the possibility of using solely the LIF in ground-state cooling with very low power and opens a way to apply it to the quantum communication.
b) Examining low-dimensional system's photoluminescence:
Suitable dispersion for polaritons pumped by surface acoustic wave (SAW) is clarified to examine energy relaxation (modulation of dispersion by SAW facilitates this process). Time-dependent quantities (occupation number, high-order correlation, decrease of linewidth) will be examined to confirm the polariton lasing (vs. photon lasing). Such a simpler mechanism is promising for high temperature polariton lasing.
c) Plasmonic energy transfer using nano hole array (NHA): LIF for the trapping of viruses at the edge of NHA with random sharp metallic nanostructures was evaluated and it was clarified that virus can be attracted toward the high-sensitivity position with large peak shift of extraordinary optical transmission.
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| 現在までの達成度 (段落) |
26年度が最終年度であるため、記入しない。
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| 今後の研究の推進方策 |
26年度が最終年度であるため、記入しない。
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