A high-quality-factor chiral metasurface for valley-polarized emission and chiral exciton-polaritons

Feng Pan; Jefferson Dixon; Sahil Dagli; Jennifer Dionne

doi:10.1117/12.2667808

17 March 2023 A high-quality-factor chiral metasurface for valley-polarized emission and chiral exciton-polaritons

Feng Pan, Jefferson Dixon, Sahil Dagli, Jennifer Dionne

Proceedings Volume PC12423, 2D Photonic Materials and Devices VI; (2023) https://doi.org/10.1117/12.2667808
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Excitons in 2D materials like transitional metal dichalcogenides (TMDCs) are important platforms for quantum information science (QIS). However, their short exciton lifetime and spin coherence time prevents them from being employed as on-chip devices in QIS. A dielectric metasurface that localizes light both temporally and spatially offers a new platform to enhance valley-polarized emission from TMDCs. We design and experimentally demonstrate a high-quality-factor Si metasurface with chiral “meta-atoms” that can strongly suppress intervalley scattering and enhance valley-polarized emission, potentially enabling room-temperature operation in strong-coupling regime.

Conference Presentation

Citation Download Citation

Feng Pan, Jefferson Dixon, Sahil Dagli, and Jennifer Dionne "A high-quality-factor chiral metasurface for valley-polarized emission and chiral exciton-polaritons", Proc. SPIE PC12423, 2D Photonic Materials and Devices VI, (17 March 2023); https://doi.org/10.1117/12.2667808

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