Polarization dependent optical trapping of chiral microresonators

We perform an experimental and theoretical investigation of the simultaneous optical trapping and rotation of spherulite-like chiral microparticles. The coupling of linear and angular momentum, mediated by the light spin and the microparticles chiral reflectance, allows for fine tuning of chirality-induced optical forces and torques. This offers novel tools for optomechanics, optical sorting and sensing, and optofluidics.