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SUMMARY:Quantum Information techniques for detecting Topological Order - J
 iannis Pachos (University of Leeds)
DTSTART:20130307T141500Z
DTEND:20130307T151500Z
UID:TALK42850@talks.cam.ac.uk
CONTACT:William Matthews
DESCRIPTION:The Chern number is a mathematical object that can theoretical
 ly determine if a fermionic system is topologically ordered or not. For ex
 ample\, it can unambiguously determine if a system can support Majorana fe
 rmions that can be employed for topological quantum computation. In this t
 alk we will reformulate the Chern number in terms of a Berry phase or a wi
 nding number. Finally\, we will present a new decomposition of the Chern n
 umber in terms of the spin components of the system's fermions that can be
  measured\, for example in cold atoms experiments.
LOCATION:MR13\, Centre for Mathematical Sciences
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