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10 papers · 2 filters
A high optical access cryogenic system for Rydberg atom arrays with a 3000-second trap lifetime
Zhenpu Zhang, Ting-Wei Hsu, Ting You Tan +4
We present an optical tweezer array of Rb atoms housed in an cryogenic environment that successfully combines a 4 K cryopumping surface, a <50 K cold box surrounding the ato…
Spin structure of diatomic van der Waals molecules of alkali atoms
Jing-Lun Li, Paul S. Julienne, Johannes Hecker Denschlag +1
We theoretically investigate the spin structure of weakly bound diatomic van der Waals molecules formed by two identical bosonic alkali atoms. Our studies were performed using know…
thin films for solid-state nuclear clocks
Chuankun Zhang, Lars von der Wense, Jack F. Doyle +11
After nearly fifty years of searching, the vacuum ultraviolet Th nuclear isomeric transition has recently been directly laser excited [1,2] and measured with high spectrosc…
Quantifying Light-assisted Collisions in Optical Tweezers Across the Hyperfine Spectrum
Steven K. Pampel, Matteo Marinelli, Mark O. Brown +2
We investigate the role of hyperfine structure in resonant-dipole interactions between two atoms cotrapped in an optical tweezer. Two-body loss rates from light-assisted collisions…
Investigating the hyperfine systematic error and relative phase in low spin-polarization alkali FID magnetometers
D. P. Hewatt, M. Ellmeier, C. Kiehl +4
Alkali-metal optically-pumped magnetometers are prone to inaccuracies arising from the overlap of the average F = I + 1/2 and F = I - 1/2 ground-state Zeeman resonances. We employ…
Hyperfine-to-rotational energy transfer in ultracold atom-molecule collisions
Yi-Xiang Liu, Lingbang Zhu, Jeshurun Luke +7
Energy transfer between different mechanical degrees of freedom in atom-molecule collisions has been widely studied and largely understood. However, systems involving spins remain…