报告题目：Localisation induced by drive and dissipation in photonic lattices

报 告 人: Alberto Amo

报告时间：2025年9月17日13:30-14:30

报告地点：物理楼W260

内容摘要:The engineering of localised modes in photonic structures is one of the main targets of modern photonics. An efficient strategy to design these modes is to use the interplay of constructive and destructive interference in periodic photonic lattices. This mechanism is at the origin of defeclmodes in photonic bandgaps, bound states in the continuum and compact localised states in flat bands. In this presentation we show two different approaches to get localisation in lattices of coupled micropillars. In the first one, we design bands whose eigenmodes are line modes and report lasing in such modes. In the second, we use resonant optical drives with controlled phase to manipulate interference effects and achieve localised emission down to a single site of a photonic lattice in a fully reconfigurable manner [1,2].

References

[1] O. Jamadi et al., Reconfigurable photon localization by coherent drive and dissipation in photonic lattices, Optica9,706(2022).

[2] T.M, Blessan et al, Directional Transport and Nonlinear Localization of light in a One-Dimensional Driven-Dissipative Photonic Lattice. https://doi.org/10.48550/arXiv.2505.11114

报告人简介: Alberto Amo got his PhD in physics in 2008 at the Universidad Autónoma de Madrid. He spent two years as a post-doc at the Laboratory Kastle Brossel in Paris, where he played an important role in the first observation of superfluidity of polaritons in semiconductor microcavities. Since 2010 he is a permanent researcher at the French National Research Center in lille. He has particularly worked in the development of polariton lattices and in the study of their topological properties