Fabrication and Measurement of Electron Interferometers in vdW Hetrostructures

Fabry-Perot interferometry has been proposed as an experimental tool to detect the effective charge of quasiparticles and the anyonic statistics in the FQH regime. The electronic interferometers are defined by two quantum point contacts (QPCs) which induce controllable backscattering and partitioning, by bringing the forward propagating edge channel in proximity with the backward propagating edge channel. Recently, clean Van der Waals heterostructures has emerged as a new platform for interferometry experiments due to their gate tunability and control over confinement potentials. In this talk I will discuss different approaches to fabricate electron interferometers by utilizing vdW technique and AFM based nanolithography. I will also present transport measurements of these confined geometries in QH regime where coherent phenomena can be observed.