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BEGIN:VEVENT
DTSTAMP:20201129T133135Z
LAST-MODIFIED:20200918T181212Z
DTSTART:20201104T203000Z
DTEND:20201104T220000Z
UID:event2359@bu.edu
URL:http://physics.bu.edu/events/show/2359
SUMMARY:The quantum sine-Gordon model with quantum circuits
DESCRIPTION:Featuring Anada Roy\, Technische Universitat Munchen (TUM)\nHos
ted by: Claudio Chamon\n\nPart of the Condensed Matter Theory Seminar Serie
s.\n\nAnalog quantum simulation has the potential to be an indispensable te
chnique in the investigation of complex quantum systems. In this work\, we
numerically investigate a one-dimensional\, faithful\, analog\, quantum ele
ctronic circuit simulator built out of Josephson junctions for one of the p
aradigmatic models of an integrable quantum field theory: the quantum sine-
Gordon (qSG) model in 1+1 space-time dimensions. We analyze the lattice mod
el using the density matrix renormalization group technique and benchmark o
ur numerical results with existing Bethe ansatz computations. Furthermore\,
we perform analytical form-factor calculations for the two-point correlati
on function of vertex operators\, which closely agree with our numerical co
mputations. Finally\, we compute the entanglement spectrum of the qSG model
. We compare our results with those obtained using the integrable lattice-r
egularization based on the quantum XYZ chain and show that the quantum circ
uit model is less susceptible to corrections to scaling compared to the XYZ
chain. We provide numerical evidence that the parameters required to reali
ze the qSG model are accessible with modern-day superconducting circuit tec
hnology\, thus providing additional credence towards the viability of the l
atter platform for simulating strongly interacting quantum field theories.
\n\nRef: arXiv:2007.06874
LOCATION: \, \,
STATUS:CONFIRMED
CLASS:PUBLIC
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