Interference experiments are performed, together with conductance and noise measurements using GaAs/AlGaAs heterostructures in the quantum Hall regime to study the behavior of electrons and quasi-particle.
Sensitive shot noise measurements are performed in all quantum Hall effect states.
Thermal conductance of a one-dimensional channel is a universal integer for all abelian states, being fractional or integer. However, for non-abelian states the thermal conductance is fractional, and thus indicative of the nature of the state (ie., supporting a Majorana quasi-particles). We employ such measurements to identify the nature of states, and in particular, states that support heat-carrying modes.