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Superradiance from cold Rydberg atoms as a new THz wave source

Research Project

Project/Area Number 26800215
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Atomic/Molecular/Quantum electronics
Research InstitutionInstitute of Physical and Chemical Research (2015)
Aoyama Gakuin University (2014)

Principal Investigator

Takamine Aiko  国立研究開発法人理化学研究所, 仁科加速器研究センター, 研究員 (10462699)

Research Collaborator MAEDA Haruka  青山学院大学, 理工学部, 教授 (80260199)
SHIOZUKA Riki  
TAKANO Masayuki  
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsリュードベリ原子 / 超放射 / テラヘルツ波 / 冷却原子 / 磁気光学トラップ / テラヘルツ
Outline of Final Research Achievements

Due to the high transition probabilities to the neighboring states, highly excited Rydberg atoms emit a superradiacne radiation including a THz wave which has recently attracted much attention. Superradiance has been hard to observe in a cold Rydberg atoms, due to the mode-matching within a nonuniformly distributed atomic sample and strong atomic interactions. However, in the preceding study, the researchers observed the evidence of superradiance in a cold Rydberg Rb gas under the conditions which did not satisfy the Dicke condition. In order to systematically study a wide range of the mode-matching conditions, the improved optical system for laser trapping made larger cold Rb atoms than the previous ones and the optical system for the Rydberg excitation laser of a much higher power was designed.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (3 results)

All 2016 2015 2014

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Population Redistribution of Cold Rydberg Atoms2016

    • Author(s)
      Aiko Takamine, Riki Shiozuka, Haruka Maeda
    • Organizer
      12th International Conference on Low Energy Antiproton Physics
    • Place of Presentation
      金沢歌劇座・金沢市下本多町・石川県
    • Year and Date
      2016-03-06
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 極低温 Rydberg 原子の準位再分布2015

    • Author(s)
      高峰愛子, 塩塚梨貴, 高野将之, 前田はるか
    • Organizer
      日本物理学会 第70回年次大会
    • Place of Presentation
      早稲田大学(東京都新宿区西早稲田)
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report
  • [Presentation] Prolonged observation of redistributing populations for cold Rydberg atoms2014

    • Author(s)
      A. Takamie, R. Shiozuka, H. Maeda
    • Organizer
      11th Asian International Seminar on Atomic and Molecular Physics (AISAMP11)
    • Place of Presentation
      東北大学(宮城県仙台市青葉区片平)
    • Year and Date
      2014-10-06 – 2014-10-10
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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