"From interacting Majorana to universal fractional quasiparticles"Jeffrey Teo , University of Virginia  Physics [Host: Bob Jones]
ABSTRACT:
Ising anyons, Majorana fermions (MF) and zero energy Majorana bound states have promising prospects in topological quantum computing (TQC) because of their ability to store quantum states nonlocally in space and insensitivity to local decoherence. Unfortunately, these objects are not powerful enough to assemble a TQC that can perform universal operations using topological braiding operations alone. On the other hand, there are anyonic quasiparticles, like the Fibonacci anyon in a ReadRezayi quantum Hall state, that are universal in the braidingbased TQC sense. However, these are quantum dynamical excitations, which can be challenging to spatially manipulate and susceptible to temperature fluctuations in a thermodynamic system. We propose and define a new notion of universal fractional quasiparticles, which are semiclassical static topological defects, supported by manybody interacting MFs in a superconducting spinorbit coupled topological electronic system. VIDEO:

Colloquium Friday, August 30, 2019 3:30 PM Physics Building, Room 204 Note special room. 
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