  Microcavity photon dynamics in curved space is an emerging interesting area
at the crossing point of nanophotonics, chaotic science and non-Euclidean
geometry. We report the sharp difference between the regular and chaotic
motions of cavity photons subjected to the varying space curvature. While the
island modes of regular motion rise in the phase diagram in the curved space,
the chaotic modes show special mechanisms to adapt to the space curvature,
including the fast diffusion of ray dynamics, and the localization and
hybridization of the Husimi wavepackets among different periodic orbits. These
obser-vations are unique effects enabled by the combination of the chaotic
trajectory, the wave nature of light and the non-Euclidean orbital motion, and
therefore make the system a versatile optical simulator for chaotic science
under quan-tum mechanics in curved space-time.
