R. G. Herb Condensed Matter Seminars |
Events During the Week of September 29th through October 6th, 2024
Monday, September 30th, 2024
- No events scheduled
Tuesday, October 1st, 2024
- No events scheduled
Wednesday, October 2nd, 2024
- No events scheduled
Thursday, October 3rd, 2024
- Experiments with Strontium Rydberg States: Spatial Correlations and Synthetic Dimensions
- Time: 10:00 am - 6:00 pm
- Place: 5310 Chamberlin
- Speaker: Yi Lu, Rice
- Abstract: Rydberg states provide wonderful platforms for studying dynamics and correlations in quantum systems with ultracold atoms. Our experiments with strontium ultralong-range Rydberg molecules (ULRRM) have demonstrated that the photo-association rate of ULRRMs can be used to probe non-local spatial correlations in a quantum gas, such as bunching and antibunching of bosonic and fermionic isotopes of strontium gases [1]. More recently, we also resolved rotational states of ULRRMs and used them to observe the s-wave suppression of the 86Sr-86Sr pair (with scattering length as=823a0). [2] I will also share in this talk our efforts and results of constructing synthetic dimensions with Rydberg atomic states. We realized the Su-Schrieffer-Heeger (SSH) model 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 strong/weak tunneling ratio is also scanned to probe the topological-trivial phase transition in the SSH model through measurements of the band structure and the winding number [4]. [1] Whalen, et al., Phys. Rev. A 100, 011402(R) (2019) [2] Lu, et al., Phys. Rev. A 106, 022809 (2022) [3] Lu, et al., Phys. Rev. A 109, 032801 (2024) [4] Lu, et al., Phys. Rev. A 110, 023318 (2024)
- Host: Mark Saffman
Friday, October 4th, 2024
- No events scheduled