Program

Majorana Takes Charge: Teleportation, Braiding and Computation

Liang Fu (Massachussetts Institute of Technology (MIT), Cambridge, MA, USA)

Majorana fermions appear as zero-energy modes bound to vortices and defects in topological superconductors. A pair of spatially separated Majoranas gives rise to a fermion state, which can be occupied or empty thus defining a topologically protected qubit. In this talk, I will describe how the Majoana nature of zero-energy modes is manifested in conductance measurement on a topological superconductor island, how spatially separated Majorana modes can be controllably coupled by electric means, and how an array of such coupled Majorana modes can be used for quantum information processing. Key to all these pheonema is the  interplay between Majorana modes and charging energy, and “Majorana takes charge”.