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DESCRIPTION:Julio Barreiro \, University of California San Diego\n\n
Systems of ultracold particles with strong inte
ractions and correlations lie at the heart of many areas of the physical s
ciences\, from atomic\, molecular\, optical\, and condensed-matter physics
to quantum chemistry. In condensed matter\, strong interactions determine
the formation of topological phases giving materials unexpected physical
properties that could revolutionize technology through robustness to noise
and disorder. In this talk I will report on our work towards the realizat
ion of a fractional Chern insulator state using our experimental apparatus
producing degenerate Fermi gases of strontium. Our simulation of the topo
logical insulating state will follow an optical flux approach\, which engi
neers the lattice in reciprocal space through polychromatic beams driving
a manifold of stimulated Raman transitions\, and will benefit from ultraco
ld strontium'\;s low temperatures and reduced heating by spontaneous em
ission.
\n
\nOn the other hand\, systems of ultracold particles
without interactions reveal matter-wave properties with enhanced interfero
metric sensitivity. I will discuss our ongoing efforts to trap ultracold s
trontium atoms on the evanescent fields of nanophotonic waveguides and nan
otapered optical fibers. The existence of magic blue and red detuned wavel
engths lead to a trapping volume that can be continuously and robustly loa
ded with ultracold strontium via a transparency beam. Fundamental studies
of Casimir and Casimir-Polder physics as well as several applications\, su
ch as field sensors and matter-wave interferometers\, will be possible wit
h these platforms.
\n
DTSTART:20201116T210000Z
LOCATION:Online\, Room via Zoom
SUMMARY:Ultracold strontium for condensed-matter simulations and quantum se
nsing
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