Journal
PHYSICAL REVIEW LETTERS
Volume 119, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.203402
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Funding
- NSFC [91421305, 91636213, 11654001, 11374176, 11574177]
- National Basic Research Program of China (973 program) [2013CB922004, 2014CB921403]
- NSF [PHY-1306407, PHY-1607256]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1607256] Funding Source: National Science Foundation
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High partial-wave (l >= 2) Feshbach resonance (FR) in an ultracold mixture of Rb-85-Rb-87 atoms is investigated experimentally aided by a partial-wave insensitive analytic multichannel quantum-defect theory. Two broad resonances from coupling between d waves in both the open and closed channels are observed and characterized. One of them shows a fully resolved triplet structure with a splitting ratio well explained by the perturbation to the closed channel due to interatomic spin-spin interaction. These tunable broad d-wave resonances, especially the one in the lowest-energy open channel, could find important applications in simulating d-wave coupling dominated many-body systems. In addition, we find that there is generally a time and temperature requirement, associated with tunneling through the angular momentum barrier, to establish and observe resonant coupling in nonzero partial waves.
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