Optical vortices by emulated cosmic strings with a gauge field in a photonic lattice. (IMAGE)
Caption
a, the depiction of a bound vortex of fermions in the gauge field of the cosmic string. b, the schematic of the deformed photonic graphene lattice with a position-dependent coefficient to emulate the cosmic string with a gauge field. The symbol O is the origin center of the photonic graphene lattice where the defect was located. c, the experimental schematic for exciting a series of waveguides in the innermost ring layer around the cosmic string. d, the evolution of light with angular momentum with different propagation distances in the cosmic string. e, the evolution of light without angular momentum with different propagation distances in the cosmic string.
Credit
by C. Sheng, Y. Wang, Y. J. Chang, H. M. Wang, Y. H. Lu, Y. Y. Yang, S. N. Zhu, X. M. Jin, and H. Liu
Usage Restrictions
Credit must be given to the creator.
License
CC BY