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PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-8855
DTSTART:20241003T150000Z
DTEND:20241003T230000Z
DTSTAMP:20260413T171609Z
LAST-MODIFIED:20240924T191915Z
LOCATION:5310 Chamberlin
SUMMARY:Experiments with Strontium Rydberg States: Spatial Correlation
 s and Synthetic Dimensions\, R. G. Herb Condensed Matter Seminar\, Yi 
 Lu\, Rice
DESCRIPTION:Rydberg states provide wonderful platforms for studying dy
 namics and correlations in quantum systems with ultracold atoms. Our e
 xperiments with strontium ultralong-range Rydberg molecules (ULRRM) ha
 ve demonstrated that the photo-association rate of ULRRMs can be used 
 to probe non-local spatial correlations in a quantum gas\, such as bun
 ching and antibunching of bosonic and fermionic isotopes of strontium 
 gases [1]. More recently\, we also resolved rotational states of ULRRM
 s and used them to observe the s-wave suppression of the 86Sr-86Sr pai
 r (with scattering length as=823a0). [2]
\n
\nI will also share in thi
 s talk our efforts and results of constructing synthetic dimensions wi
 th Rydberg atomic states. We realized the Su-Schrieffer-Heeger (SSH) m
 odel used six 3S1 Rydberg levels with microwave frequencies resonantly
  connecting adjacent pairs. Edge-to-edge long-range tunneling and bulk
 -population oscillations\, characteristic behaviors of the topological
  phase\, were observed in the measured population evolution [3]. The s
 trong/weak tunneling ratio is also scanned to probe the topological-tr
 ivial phase transition in the SSH model through measurements of the ba
 nd structure and the winding number [4].
\n
\n
\n[1] Whalen\, et al.\,
  Phys. Rev. A 100\, 011402(R) (2019)
\n[2] Lu\, et al.\, Phys. Rev. A 
 106\, 022809 (2022)
\n[3] Lu\, et al.\, Phys. Rev. A 109\, 032801 (202
 4)
\n[4] Lu\, et al.\, Phys. Rev. A 110\, 023318 (2024)
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URL:https://www.physics.wisc.edu/events/?id=8855
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