Event Details

We are witnessing and participating the grand discovery of various topological states of matter. In this talk, I will introduce time-reversal-invariant topological superconductivity and its several ongoing experimental realizations. Uniquely, each 0D boundary of such a topological superconductor hosts one Majorana Kramers pair, producing tabletop supersymmetry, quantized tunneling conductance, and fractional Josephson effects beyond Kitaev's classification. I will then highlight the tantalizing roles played by the many-body interactions in such a platform. One prime example is the emergence of quadruple periodicity and fractionalized parafermions in a Josephson effect. Another paradigmatic setup is a weakly probed floating topological superconductor, in which a two-channel Kondo ground state becomes stabilized without fine tuning.