A universal and stable metasurface for photonic quasi bound state in continuum coupled with two dimensional semiconductors

Abstract

Strong coupling of excitons to optical cavity modes is of immense importance to understanding the fundamental physics of quantum electrodynamics at the nanoscale as well as for practical applications in quantum information technologies. There have been several attempts at achieving strong coupling between excitons in two dimensional semiconductors such as transition metal dichalcogenides (TMDCs) and photonic quasi-bound states in the continuum (BICs). We identify two gaps in the platforms for achieving strong coupling between TMDC excitons and photonic quasi-BICs: firstly, in the studies so far, different cavity architectures have been employed for coupling to different TMDCs. This would mean that typically, the fabrication process flow for the cavities will need to be modified as one moves from one TMDC to the other, which can limit the technological progress in the field. Secondly, there has been no discussion of the impact of fabrication imperfections in the studies on strong coupling of these subsystems so far. In this work, we address these two questions by optimizing a cavity with the same architecture which can couple to the four typical TMDCs (MoS${}_2$, WS${}_2$, MoSe${}_2$, WSe${}_2$) and perform a detailed investigation on the fabrication tolerance of the associated photonic quasi-BICs and their impact on strong coupling.

References in corpus (19)

• Fano resonances in nanoscale structures
• Two-Dimensional Material Nanophotonics
• Asymmetric metasurfaces with high-$Q$ resonances governed by bound states in the continuum
• Resonantly Trapped Bound State in the Continuum Laser
• Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
• Strong light-matter coupling in two-dimensional atomic crystals
• Nonradiating Photonics with Resonant Dielectric Nanostructures
• Giant nonlinear response at the nanoscale driven by bound states in the continuum
• Two-dimensional semiconductors in the regime of strong light-matter coupling
• Photonic-Crystal Exciton-Polaritons in Monolayer Semiconductors
• Nonlinear polaritons in monolayer semiconductor coupled to optical bound states in the continuum
• Strong coupling between excitons in transition metal dichalcogenides and optical bound states in the continuum
• Nonlinear Bound States in the Continuum in One-Dimensional Photonic Crystal Slab
• Breit-Wigner-Fano lineshapes in Raman spectra of graphene
• Perfect energy-feeding into strongly coupled systems and interferometric control of polariton absorption
• Strong coupling between excitons and magnetic dipole quasi-bound states in the continuum in WS${}_2$-TiO${}_2$ hybrid metasurfaces
• Hybrid Bound States in Continuum for Enhanced Sensing and Light Manipulation
• Exceptional points in lossy media enable decay-free wave propagation
• Polaritonic Critical Coupling in a Hybrid Quasi-Bound States in the Continuum Cavity-WS${}_2$ Monolayer System