Physics & Astronomy Colloquium
3:30 PM, Friday, December 2, 2011
Room 155, Chem-Phys Building
Dr. Kirill Shtengel
Department of Physics
University of California, Riverside
"Non-Abelian anyons: New particles for less than a billion?''
States of matter are conventionally classified according to broken
symmetries. Topologically ordered phases fall outside of this paradigm:
with no local order parameter, they nevertheless have many peculiar
properties setting them apart from disordered phases. In 2D, such
phases may support anyons - quasiparticles that are neither bosons
nor fermions. Moreover, anyons with non-Abelian statistics can occur,
particularly in the fractional quantum Hall regime.
In this talk, I will focus on solid state interferometers designed to
detect such exotic statistics. I will discuss recent experiments in the
the quantum Hall regime at 5/2 filling where the evidence for the existence
of non-Abelian anyons may have in fact been observed for the
first time. I will also mention potential applications of such
interferometeric schemes for topological quantum computation.
Refreshments will be served in CP 179 at 3:15 PM