2011 Fiscal Year Final Research Report

Discovery of dark-state superradiance and validation of acceleration mechanism

Research Project

Project/Area Number	21340056
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Research Field	Particle/Nuclear/Cosmic ray/Astro physics
Research Institution	Kyoto University
Principal Investigator	NANJO Hajime 京都大学, 大学院・理学研究科, 助教 (40419445)
Co-Investigator(Kenkyū-buntansha)	SASAO Noboru 岡山大学, 教育研究プログラム戦略本部極限量子研究コア, 教授 (10115850)
Project Period (FY)	2009 – 2011
Keywords	素粒子
Research Abstract	I proposed a new phenomena,"Dark-State Superradiance", which was a superradiance from the dark state. The radiation strength from the superradiance is proportional to the square of the number of atoms with a delay time in developing the coherence between the group of atoms. On the other hand, the darkstate superradiance was expected to have no delay time due to the original coherence between the two states in the atoms. For the discovery of the dark-state superradiance, the barium target and lasers were prepared. A transition with superradiance to utilize the coherence of the two states was succeeded, which was the step to realize the darkstate superradiance.

(4 results)