The group is concentrating on measurements that reveal characteristics of coherent mesoscopic systems that are not easily measured by ubiquitous conductance measurements. Conductance measuremnets are directly related to the transmission coefficient of the system, hiding phase and temporal behavior. Hence, examples of experiments are: Phase evolution of electrons is measured via novel electron interferometers; Sources of decoherence are studied by ‘which path’ type experiments, where an artificial environment is coupled to the interferometer; Charge and statistics are deduced from delicate measurements of quantum shot noise. One would expect different statistics from that of electrons (fermions) and photons (bosons), such as fractional statistics. Efforts are spent in producing the highest quality semiconducting layers produced by molecular beam epitaxy.
Research in home-grown semiconductor nano-wires, via MBE, is conducted. Study of Andreev bound-states and Majoranna physics carried out by conductance, Shot noise and cross-correlation measurements.
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-particles.
MBE-grown InAs nanowires are used to study 1D physics, Cooper-pairs and for the search of Majorana Fermions.
MBE grown heterostructures comprising materials with strong spin-orbit coupling such as InAs are used to study superconductivity and topological superconductivity.
Designed and maintained by Yunchul Chung, Nissim Ofek, Emil Weisz and Anna Grivnin. March 2016.