| Project/Area Number |
12650038
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
UJIHARA Kikuo The University of Electro-Communications, Faculty of Electronic Engineering, Professor, 電気通信学部, 教授 (90017351)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | microcavity / two-atom emission / two-atom Rabi oscillation / effective mode radius / weakened Rabi oscillation / symmetric (anti-symmetric) state / two-molecule emission / 誘導放出素過程検証 / マイクロキャビティ / 二励起部分空間 |
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| Research Abstract |
Cooperative emission by two initially excite atoms in a planar microcavity is investigated quantum-mechanically. Using exact electro-magnetic mode functions extending over whole space that includes the cavity, we obtained a delay-differential equation containing relevant delay times. Numerical analysis in the strong-coupling regime revealed strong cooperative effects for small inter-atomic distances. Notably, the cooperative effects diminished for distances around the characteristic mode size of the planar microcavity. In this connection, the role of symmetric and anti-symmetric intermediate states in cooperative emission by two initially excited atoms in free space was investigated to find that both states contribute to the radiative decay and lack of either one results in prolonged decay. Preliminary experiments on observing two molecule emission under the mode defining property of a planar microcavity was performed using a Rhodamine6G dye solution as the emitting medium and a SHG-YAG laser as the pump source. Signatures of two molecule emission events were observed.
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