Pioneering Cooperative Quantum Optical Phenomena in Moire Superlattices

2023 Fiscal Year Final Research Report

• Project/Area Number: 21H01012
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
• Research Institution: Kyoto University
• Principal Investigator: Keisuke Shinokita 京都大学, エネルギー理工学研究所, 助教 (60806446)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 光物性 / 半導体物性

Outline of Final Research Achievements

This study investigated the fundamental optical properties of excitons in moire superlattices and explored novel optical phenomena utilizing inter-exciton interactions. We unveiled the basic optical characteristics of moire excitons Precise and flexible arrangement of moire excitons was achieved, leading to the enhancement of inter-exciton interactions and the observation of new quantum optical phenomena.
The findings have deepened the understanding of exciton physics in moire superlattices and contributed to the development of new optical science. The long coherence times of moire excitons and the quantum many-body phenomena arising from inter-exciton interactions show promise for applications in quantum information processing and novel optical devices.These achievements advance fundamental physics and have significant implications for the future development of quantum technologies and optoelectronics, paving the way for exploring new frontiers in optical science and technology.

Free Research Field

光科学

Academic Significance and Societal Importance of the Research Achievements

本研究は、モアレ超構造における励起子物理の理解を大きく深化させ、二次元半導体における新たな光科学の開拓に貢献するものである。モアレ励起子の長いコヒーレンス時間や励起子間相互作用を利用した量子多体現象は、量子情報処理や新たな光デバイスへの応用が期待される。また、モアレ超構造における励起子の電荷制御は、高効率な光電変換デバイスの実現に繋がる可能性がある。本研究で得られた知見は、基礎物理の発展だけでなく、将来の量子技術や光エレクトロニクスの発展に大きく寄与すると期待される。