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SUMMARY:Nonlinear topological photonics - Mikael Rechtsman\, Penn State
DTSTART:20210304T140000Z
DTEND:20210304T150000Z
UID:TALK155011@talks.cam.ac.uk
CONTACT:Jan Behrends
DESCRIPTION:The defining property of a topological system is that it exhib
 its some physical property that is highly robust to perturbations\, namely
 \, it is topologically protected.  In recent years\, it has been demonstra
 ted that such phenomena are not confined to the domain of condensed matter
  physics (for example\, in the quantum and spin Hall effects)\, but rather
  can be found in other systems such as photonics\, ultracold atoms\, acous
 tics\, polaritonics\, etc.  In this talk I will present our experimental r
 esults on the effect of nonlinearity on topological photonic systems.  Fir
 st\, I will show the observation of edge solitons\, and the implications o
 f nonlinearity upon them.  Next\, I will demonstrate how nonlinearity can 
 act to quantize transport in photonic Thouless pumps\, despite the absence
  of perfect band filling.  Nonlinearity is a close cousin of interparticle
  interactions for bosonic systems\, so we expect our results to be widely 
 applicable beyond photonics.
LOCATION:Details of video conferencing will be distributed nearer the time
 .
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