Physics @ Berkeley
Events in Physics
Title: Topological Matter And Why You Should Care    (Colloquia)
Start Date: 11/25/2013
Time: 4:15 pm
Location: 1 LeConte Hall
Speaker: Steven Simon
Affiliation: Professor of Physics, University of Oxford
Contact Person: Sarah Wittmer   (510) 642-3034

In two dimensional topological phrases of matter, processes depend on gross topology rather than detailed geometry. Thinking in 2+1 dimensions, particle world lines can be interpreted as knots or links, and the amplitude for certain processes becomes a topological invariant of that link. While sounding rather exotic, we believe that such phases of matter not only exist, but have actually been observed in quantum Hall experiments, and could provide a uniquely practical route to building a quantum computer. Possibilities have also been proposed for creating similar physics in systems ranging from superfluid helium to strontium ruthenate to semiconductor-superconductor junctions to quantum wires to spin systems to cold atoms.