Frequency-Domain Berry Curvature Effect on Time Refraction
Abstract
We demonstrate that there exists frequency-domain Berry curvature in the wave function of photons in dispersive optical systems. This property arises from the frequency dispersion of its dielectric function, which makes Maxwell equations a nonstandard eigenvalue equation, with the eigenvalue (frequency) appearing inside the operator itself. We study this new Berry curvature effect on time refraction of magnetoplasmon-polariton as an example. It can induce deflection in the trajectory of a photon and make the ray swing.
Fields of Study & Subjects
Geophysics and Sensor Technology
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 6
- Pages
- 066301–066301
- Publication date
- 13 January 2026
- Language
- EN