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SUMMARY:Universal and efficient hybrid digital-analog fermionic quantum si
 mulator
DTSTART:20261110T203000Z
DTEND:20261110T220000Z
DTSTAMP:20261112T191400Z
UID:indico-event-35214@indico.bnl.gov
DESCRIPTION:Speakers: Haotian Wei (BNL: Condensed Matter Physics and Mater
 ials Science Department)\n\nWe design a universal framework for fermionic 
 quantum hardware that runs efficient variational algorithms to simulate ge
 neric many-body systems beyond the hardware’s native interactions. Our a
 nalysis shows that one can quantum simulate the ground-state properties of
  a broad class of gapless target Hamiltonians of local observables in a qu
 antum evolution time that grows polynomially with the inverse relative err
 or  up to logarithmic corrections\, and offers an exponential speedup ove
 r naïve classical algorithms such as exact diagonalization (ED). We provi
 de numerical evidence and theoretical argument that this holds for energy 
 density\, as well as density-density and spin-spin correlations in three q
 ualitatively distinct models – the repulsive Hubbard model\; a Hubbard m
 odel augmented with nearest-neighbor attractive interactions\, which intro
 duces the phenomenon of pairing\; and the Hofstadter-Hubbard model\, which
  introduces a gauge field and fractional quantum Hall physics. This work d
 emonstrates the usefulness of current ultracold fermionic quantum platform
 s for quantum simulating fermionic many-body systems beyond the models nat
 ively implemented in the hardware.\nhttps://bnl.zoomgov.com/j/1659180989?p
 wd=ptKQrjBOEmGHAKtkC3TTAGNeA3lrsM.1\n\nhttps://indico.bnl.gov/event/35214/
LOCATION:Large Seminar Room (BNL Building 510 (Physics))
URL:https://indico.bnl.gov/event/35214/
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