BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.bham.ac.uk//v3//EN
BEGIN:VEVENT
CATEGORIES:Theoretical Physics Seminars
SUMMARY:New frontiers in topology in multi-level systems -
F Nur Ünal\, University of Cambridge
DTSTART:20221124T131500Z
DTEND:20221124T143000Z
UID:TALK5070AT
URL:/talk/index/5070
DESCRIPTION:Topologically protected phases profit from connect
ions with mathematical principles to characterize
illustrious physical behaviors in tangible systems
. State-of-the-art quantum simulators provide a ve
rsatile platform for exploring these phenomena at
a fundamental level\, even providing the opportuni
ty for observing the ‘knots’ that wave functions t
ie during their evolution. Many of these topologic
al evaluations are related to the underlying quant
um geometry\, for which the Bloch sphere constitut
es a paradigmatic example in the minimal of two le
vels. In this talk\, I will introduce a geometric
description for N-level systems in terms of a nest
ed structure comprising spheres\, which opens up a
new avenue for the interpretation of the topologi
cal classification and the dynamical illustration
of multi-level systems as well as the design of ne
w experimental probes. Furthermore\, I will presen
t new exotic topologies involving non-Abelian brai
ding of band nodes in multi-gap non-interacting sy
stems. I will demonstrate new anomalous topologica
l phases in out-of-equilibrium settings with no st
atic counterparts as well as ways for quantum simu
lators to probe them. \n\nSlager\, Bouhon\, Ünal\,
arXiv:2208.12824.\nKemp\, Cooper\, Ünal\, Phys Re
v Research 4\, 023120 (2022).
LOCATION:Theory Library
CONTACT:Mark Dennis
END:VEVENT
END:VCALENDAR