Study on high excitation density exciton-polariton Bose Einstein condensation
Project/Area Number |
24740277
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Atomic/Molecular/Quantum electronics
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Research Institution | Yokohama National University (2014) National Institute of Informatics (2012-2013) |
Principal Investigator |
HORIKIRI Tomoyuki 横浜国立大学, 工学(系)研究科(研究院), 准教授 (40530275)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Keywords | 量子光学 / 励起子ポラリトン / ボース・アインシュタイン凝縮 / 半導体マイクロ共振器 / ポラリトン凝縮 / 強結合 / 量子井戸 / マイクロ共振器 / ポラリトンレーザー / 高励起 / ボース・アインシュタイン凝縮 / 共振器量子電磁気学 |
Outline of Final Research Achievements |
In this study, high density exciton-polariton condensation was investigated. Photoluminescence (PL) by time-resolved spectroscopy in the regime far above condensation threshold (~100 times) was observed. PL showing lower polariton energy at low densities gradually shifted toward higher energy closing to a cavity photon energy as density goes up, and a new higher energy PL peak appeared. The PL dynamics was investigated by theoretical calculations. In addition, we studied the reason of the nonexistence of a lower energy peak which had been expected while there exists a higher energy peak and found that nonequilibrium feature of the exciton-polariton system leads to the observed unbalance in the relative brightness of sidebands. The experimental and theoretical investigations led us to a conclusion that electron-hole binding in the high density regime still seems to exist.
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Report
(4 results)
Research Products
(10 results)
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[Presentation] New Lasing From Exciton-Polariton Condensates in High Excitation Regime2013
Author(s)
Tomoyuki Horikiri, Makoto Yamaguchi, Kenji Kamide, Yutaka Shikano, Yasuhiro Matsuo, Tim Byrnes, Natsuko Ishida, Andreas Löffler, Sven Höfling, Tetsuo Ogawa, Alfred Forchel, and Yoshihisa Yamamoto
Organizer
CLEO-PR&OECC/PS 2013
Place of Presentation
京都国際会議場、京都
Related Report
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[Presentation] Photoluminescence of exciton-polariton condensates in high excitation regime2012
Author(s)
T. Horikiri, M. Yamaguchi, K. Kamide, Y. Shikano, T. Byrnes, K. Kusudo, N. Ishida, Y. Matsuo, A. Loeffler, S. Hoefling, T. Ogawa, A. Forchel, and Y. Yamamoto
Organizer
The 6th International Conference on Spontaneous Coherence in Excitonic Systems (ICSCE-6)
Place of Presentation
Stanford university, CA, USA
Related Report
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