  Handedness-selective chiral transport is an intriguing phenomenon that not
only holds significant importance for fundamental research, but it also carries
application prospects in fields such as optical communications and sensing.
Currently, on-chip chiral transport devices are static, unable to modulate the
output modes based on the input modes. This limits both device functionality
reconfiguration and information transmission capacity. Here, we propose to use
the incident polarization diversity to control the Hamiltonian evolution path,
achieving polarization-dependent chiral transport. By mapping the evolution
path of TE and TM polarizations onto elaborately engineered double-coupled
waveguides, we experimentally demonstrate that different polarizations yield
controllable modal outputs. This work combines Multiple-Input Multiple-Output
and polarization diversity concepts with chiral transport, and challenges the
prevailing notion that the modal outputs are fixed to specific modes in chiral
transport, thereby opening pathways for the development of on-chip
reconfigurable and high-capacity handedness-selective devices.
