It is a pleasure to announce the upcoming theoretical physics colloquium:

Daniel Loss, "Topological Bound and Edge States in Low Dimensions"

Location: Uni Zurich, Irchel Campus, Lecture Hall Y16G05 Date and Time: Monday, 11 March 2013, 16:45h (16:30h Coffee)

I will present some recent results [1,2,3] on exotic quantum states in low-dimensional systems with topological phases. These states can emerge as bound states in one and two dimensions due to the presence of spin orbit interaction and/or external magnetic fields that induce topological gaps via backscattering. Examples are fractionally charged fermions of Jackiw-Rebbi type, Majorana fermions, or edge states in quantum Hall systems, both in the integer and fractional filling factor regime. I will discuss simple lattice models, such as chains, ladders, and strips and show that there are topological phases which permit fermions with non-Abelian braiding statistics--believed to be useful for topological quantum computing. These models can be implemented in optical lattices.

[1] J. Klinovaja, P. Stano, and D. Loss, Phys. Rev. Lett. 109, 236801 (2012). [2] J. Klinovaja and D. Loss, arXiv:1301.5822. [3] J. Klinovaja and D. Loss, arXiv:1302.6132.

Hope to see you,

Prasenjit and Matthias.

Matthias Christandl Institute for Theoretical Physics ETH Zurich http://www.itp.phys.ethz.ch/people/christandl/index

Prasenjit Saha Institute for Theoretical Physics University of Zurich http://www.physik.uzh.ch/~psaha/

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