[8p-A33-1~7] 17.2 Fundamental properties

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-A33-1] Observation of Coherent Optical Stark Effect in WSe₂/MoSe₂ Heterostructure

〇Shinichiro Matano¹, Kenji Watanabe², Takashi Taniguchi², Kazunari Matsuda¹ (1.IAE, Kyoto Univ., 2.NIMS)

Keywords:

Quantum optics,Optical Stark effect,Two-dimensional semiconductor

In this talk, I will present the observation of the optical Stark effect in WSe₂/MoSe₂ heterostructure. Two-dimensional semiconductor has an atomic-scale thin structure, leading to its unique characteristics: strong light-matter interaction and valley polarization. Artificial hetero-stack of two-dimensional semiconductors generates Moire pattern between the two semiconductors, and produce new quantum properties on the interlayer condition, making the hetero system a promising quantum platform. In this study, we investigated the optical Stark effect in the interlayer exciton of WSe₂/MoSe₂ heterostructure. We measured the reflectance response of the interlayer exciton using highly-resolved reflectance spectroscopy. The interlayer exciton response shows the blue shift in the strong electrical field region, which indicates the optical Stark effect in WSe₂/MoSe₂ heterostructure.