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Exploring the limits of ultracold atoms in space
RJ Thompson, D. C. Aveline, Sheng-Wey Chiow +10
Existing space-based cold atom experiments have demonstrated the utility of microgravity for improvements in observation times and for minimizing the expansion energy and rate of a…
Discrete time crystals enforced by Floquet-Bloch scars
Biao Huang, Tsz-Him Leung, Dan Stamper-Kurn +1
We analytically identify a new class of quantum scars protected by spatiotemporal translation symmetries, dubbed Floquet-Bloch scars. They distinguish from previous (quasi-)static…
Direct Geometric Probe of Singularities in Band Structure
Charles D. Brown, Shao-Wen Chang, Malte N. Schwarz +5
The band structure of a crystal may have points where two or more bands are degenerate in energy and where the geometry of the Bloch state manifold is singular, with consequences f…
Tracking evaporative cooling of a mesoscopic atomic quantum gas in real time
Johannes Zeiher, Julian Wolf, Joshua A. Isaacs +2
The fluctuations in thermodynamic and transport properties in many-body systems gain importance as the number of constituent particles is reduced. Ultracold atomic gases provide a…
Interaction-Enhanced Group Velocity of Bosons in the Flat Band of an Optical Kagome Lattice
Tsz-Him Leung, Malte N. Schwarz, Shao-Wen Chang +3
Geometric frustration of particle motion in a kagome lattice causes the single-particle band structure to have a flat s-orbital band. We probe this band structure by exciting a Bos…
Mean-field scaling of the superfluid to Mott insulator transition in a 2D optical superlattice
Claire K. Thomas, Thomas H. Barter, Tsz-Him Leung +6
The mean-field treatment of the Bose-Hubbard model predicts properties of lattice-trapped gases to be insensitive to the specific lattice geometry once system energies are scaled b…