Experimental studies on the macro-coherent amplification mechanism and two-photon paired super-radiance

宏观相干放大机制及双光子配对超辐射实验研究

• 批准号: 21244032
• 负责人: SASAO Noboru
• 金额: $ 29.12万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21244032/
• 关键词: マクロコヒーランス; 超放射; 二光子超放射; ニュートリノ質量分光; マトリックス; フラーレン

The present research aims at proving experimentally the macro-coherent amplification mechanism that is a new class of coherent and cooperative phenomena similar to the super-radiance.When such an amplification mechanism works for a two-photon deexcitation process, for example, its rate is expected to be amplified. In our experiment, we prepared the vibrational excited states of hydrogen gas by adiabatic Raman scatterings, and observed the two photon cascade process.As a result we found that the rate of the observed process is amplified as the initial coherence increases and that its amplification factor agrees with the theoretical expectation. We have thus established the validity of macro-coherent amplification mechanism.

本研究旨在从实验上证明宏观相干放大机制是一种新的类似于超辐射的相干和合作现象，当这种放大机制用于双光子去激发过程时，其速率有望被放大。在我们的实验中，我们通过绝热拉曼散射制备了氢气的振动激发态，并观察到了双光子级联过程。结果发现，观察到的过程的速率随着初始相干度的增加而放大，其放大因子与理论预期相符。从而确立了宏观相干放大机制的有效性。

项目成果

Production of Ba meta-stable states via super-radiance

通过超辐射产生Ba亚稳态

• 发表时间: 2010
• 作者: N.Sasao,A.Fukumi,K.Nakajima,I.Nakano;H.Nanjo,C.Ohae,S.Sato,T.Taniguchi;T.Yamaguchi,M.Yoshimura
• 通讯作者: T.Yamaguchi,M.Yoshimura

Parity violating observables in radiative neutrino pair emission from metastable atoms

亚稳态原子辐射中微子对发射中的宇称破缺可观测值

• DOI: 10.1143/ptp.123.523
• 发表时间: 2010
• 期刊: Progeress of Theoretical Physics
• 作者: M.Yoshimura;A.Fukumi;N.Sasao and T.Yamaguchi
• 通讯作者: N.Sasao and T.Yamaguchi

Neutrino spectroscopy with atoms and molecules

• DOI: 10.1093/ptep/pts066
• 发表时间: 2012-11
• 期刊: Progress of Theoretical and Experimental Physics
• 影响因子: 3.5
• 作者: A. Fukumi;S. Kuma;Y. Miyamoto;K. Nakajima;I. Nakano;H. Nanjo;C. Ohae;N. Sasao;Minoru Tanaka;T. Taniguchi;S. Uetake;Tomonari Wakabayashi;Takuya Yamaguchi;A. Yoshimi;M. Yoshimura

Dynamics of two-photon paired superradiance

• DOI: 10.1103/physreva.86.013812
• 发表时间: 2012-03
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: M. Yoshimura;N. Sasao;M. Tanaka

Photoinduced reaction of polyynederivatives and iodine molecules

聚炔衍生物与碘分子的光诱导反应

• 发表时间: 2012
• 作者: Y.Wada;T.Wakabayashi;ほか3 名
• 通讯作者: ほか3 名