期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.013002
关键词
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资金
- Australian Research Council Discovery program
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- IC postdoctoral fellowship program
We present the first realization of a solitonic atom interferometer. A Bose-Einstein condensate of 1 x 10(4) atoms of rubidium-85 is loaded into a horizontal optical waveguide. Through the use of a Feshbach resonance, the s-wave scattering length of the Rb-85 atoms is tuned to a small negative value. This attractive atomic interaction then balances the inherent matter-wave dispersion, creating a bright solitonic matter wave. A Mach-Zehnder interferometer is constructed by driving Bragg transitions with the use of an optical lattice colinear with the waveguide. Matter-wave propagation and interferometric fringe visibility are compared across a range of s-wave scattering values including repulsive, attractive and noninteracting values. The solitonic matter wave is found to significantly increase fringe visibility even compared with a noninteracting cloud.
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