期刊
PHYSICAL REVIEW A
卷 84, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.84.052724
关键词
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资金
- NIST
- NSF-PFC
- AFOSR
- DARPA-QuASAR
- ARO
- DARPA-OLE
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125844] Funding Source: National Science Foundation
Recently, p-wave cold collisions were shown to dominate the density-dependent shift of the clock transition frequency in a Yb-171 optical lattice clock. Here we demonstrate that by operating such a system at the proper excitation fraction, the cold-collision shift is canceled below the 5 x 10(-18) fractional frequency level. We report inelastic two-body loss rates for P-3(0)-P-3(0) and S-1(0)-P-3(0) scattering. We also measure interaction shifts in an unpolarized atomic sample. Collision measurements for this spin-1/2 Yb-171 system are relevant for high-performance optical clocks as well as strongly interacting systems for quantum information and quantum simulation applications.
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