Water-Wave Pancharatnam-Berry Phase Induced by 4D Spin-Orbit State Evolution.

ABSTRACT: Geometric phase is a far-reaching concept in quantum and classical physics, revealing deep connections between topology and wave dynamics in diverse systems. The Pancharatnam-Berry (PB) geometric phase, which arises from 2D optical polarization evolution, has revolutionized light manipulation by enabling optical metasurfaces. The PB phase is commonly regarded as a unique property of light waves. Generalizing this concept to other classical waves can uncover new geometric phase properties and enable novel wave control mechanisms. Here, the first observation of the PB phase in surface water (gravity) waves is reported, achieved through the interaction with symmetry-engineered scatterers. In contrast to the optical PB phase, the water-wave PB phase is an intrinsic higher-order geometric phase

SUBMITTER: Xiao W 

PROVIDER: S-EPMC12786372 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature