Seminar: Joseph Choi

Superchiral Field, Phase Modulation, Optical Cloaking

Joseph Choi, University of Rochester

Quantum mechanical or classical interactions between light and matter can demonstrate interesting effects even in simplified models. I will present three such works. The first is a semi-classical theory that corrects the enhancement from a "superchiral" field, by including the magnetic susceptibility term which is usually ignored because of how small it is. The second is a quantum optics experiment, where the spatial transverse profile of a Gaussian beam, combined with an atomic vapor cell, modulates the phase of another laser beam by focusing it. Finally, classical optics using paraxial ray optics and discretization of space is used for demonstrating practical invisibility cloaking.