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IQUIST Seminar: "Band Engineering for Quantum Simulation in Circuit QED"

Event Type
Seminar/Symposium
Sponsor
IQUIST
Date
Sep 15, 2020   11:00 am  
Speaker
Alicia J. Kolla ́r, University of Maryland
Contact
Becky McDuffee
E-Mail
mcduffbe@illinois.edu
Phone
217-300-0898
Views
46
Originating Calendar
IQUIST Seminar Series

Abstract:

The field of circuit QED has emerged as a rich platform for both quantum com- putation and quantum simulation. Lattices of coplanar waveguide (CPW) resonators realize artificial photonic materials in the tight-binding limit. Combined with strong qubit-photon interactions, these systems can be used to study dynamical phase tran- sitions, many-body phenomena, and spin models in driven-dissipative systems. I will show that these waveguide cavities are uniquely deformable and can produce lattices and networks which cannot readily be obtained in other systems, including periodic lattices in a hyperbolic space of constant negative curvature. Furthermore, I will show that the one-dimensional nature of CPW resonators leads to degenerate flat bands and that criteria for when they are gapped can be derived from graph-theoretic techniques. The resulting gapped flat-band lattices are difficult to realize in standard atomic crys- tallography, but readily realizable in superconducting circuits.

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For Zoom link you may contact Kelly Foster (foster5@illinois.edu), or Becky McDuffee (mcduffbe@illinois.edu). To subscribe to our weekly email go to https://lists.illinois.edu/lists/subscribe/iquist-announcements.

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