Enhanced optical Stark shifts in a single quantum dot embedded in an H1 photonic crystal nanocavity. (25th May 2017)

• Record Type: Journal Article
• Authors: Takagi, Hiroyuki; Ota, Yasutomo; Kumagai, Naoto; Ishida, Satomi; Iwamoto, Satoshi; Arakawa, Yasuhiko
• Is Part Of: Applied physics express. Volume 10:Number 6(2017)
• Publication Date: 2017-05-25
• Subjects: Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/APEX.10.062002
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We demonstrate large optical Stark shifts in a single quantum dot embedded in a modified H1 photonic crystal nanocavity. We designed the nanocavity to simultaneously possess a high Q factor, a small mode volume, and a high coupling efficiency to the external laser field. This nanocavity enabled the observation of a large Stark shift of 70 µeV even under very weak laser irradiation. The large shift was sustained by only four intracavity photons on average, paving the way for the development of ultralow-power quantum/classical optical devices.