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SUMMARY:Complexity and self-organization in superconducting metamaterials.
  - Prof Giorgos Tsironis\, University of Crete and Nazarbaev University
DTSTART:20151014T101500Z
DTEND:20151014T111500Z
UID:TALK61003@talks.cam.ac.uk
CONTACT:Helen Verrechia
DESCRIPTION:Superconducting metamaterials comprising of rf Superconducting
  Quantum Interference Devices (SQUIDs) form a complex nonlinear system wit
 h interesting  tuneability and dynamic multistability properties. Dependin
 g on the parameter regime the SQUID metamaterial may operate in a negative
  permeability regime\, induce intrinsic nonlinear localized modes\, tame d
 isorder through hysteretic loops or transmit through nonlinear frequency b
 ands. In the quantum regime\, on the other hand\, the SQUID “meta-atoms
 ” may interact through injected electromagnetic field and form a propaga
 ting “quantum breather”\, i.e. a compound semiclassical propagating mo
 de induced by the nonlinearity of the interaction. In this presentation we
  will first focus on the classical results and outline the nonlinear dynam
 ics aspects of the SQUID metamaterial and then switch to the semiclassical
  regime and describe the dynamics of the collective mode and its propertie
 s. 
LOCATION:Mott Seminar Room (531)\, Cavendish Laboratory\, Department of Ph
 ysics
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