Generalized laws of refraction and reflection at interfaces between different photonic artificial gauge fields.

ABSTRACT: Artificial gauge fields the control over the dynamics of uncharged particles by engineering the potential landscape such that the particles behave as if effective external fields are acting on them. Recent years have witnessed a growing interest in artificial gauge fields generated either by the geometry or by time-dependent modulation, as they have been enablers of topological phenomena and synthetic dimensions in many physical settings, e.g., photonics, cold atoms, and acoustic waves. Here, we formulate and experimentally demonstrate the generalized laws of refraction and reflection at an interface between two regions with different artificial gauge fields. We use the symmetries in the system to obtain the generalized Snell law for such a gauge interface and solve for reflection and tran

SUBMITTER: Cohen MI 

PROVIDER: S-EPMC7755922 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature