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SUMMARY:Topology by non-unitary quantum dynamics -  Prof. Dr. Jan Carl Bud
 ich\, TU Dresden 
DTSTART:20200213T141500Z
DTEND:20200213T151500Z
UID:TALK128278@talks.cam.ac.uk
CONTACT:Katarzyna Macieszczak
DESCRIPTION:Topological states of matter have been an active field of rese
 arch in\nphysics for many years. The recent experimental progress on their
 \nrealization with synthetic materials such as ultracold atomic gases in\n
 optical lattices and photonic systems raises natural questions about the\n
 notion of topological quantum matter far from thermal equilibrium. In\nthi
 s talk\, we present our theoretical findings in this context. First\,\nan 
 experimentally feasible scheme to dynamically prepare topological\nstates 
 in a target system by means of adiabatic evolution in an extended\nsystem 
 will be discussed. The second part focuses on the quench dynamics\nof inte
 racting topological insulators. Specifically\, we discuss the\nnon-equilib
 rium Hall response of a system initialized in a topologically\ntrivial sta
 te before its Hamiltonian is ramped into a Chern insulator\nphase\, compar
 ing the free coherent dynamics with effects of dephasing\nand interaction 
 induced dissipation\, respectively.
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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