Measurement of three-body recombination coefficient of ultracold lithium and strontium atoms
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arXiv
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| Format: | Preprint |
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2024
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| author | Wang, Bo-Yang Wang, Yi-Fan An, Zi-He Xie, Li-Yang Ye, Zhu-Xiong Zhang, Yi Tey, Meng Khoon |
| author_facet | Wang, Bo-Yang Wang, Yi-Fan An, Zi-He Xie, Li-Yang Ye, Zhu-Xiong Zhang, Yi Tey, Meng Khoon |
| contents | We report on the observation of a conspicuous loss in an ultracold mixture of $^{7}$Li and $^{88}$Sr atoms confined in a far-off-resonance optical dipole trap. We attribute the trap loss to the three-body inelastic Li-Sr-Sr collision and extract the corresponding three-body recombination coefficient $K_3$ at $T\sim 18.5,45,70,600$ $μK$. The measured three-body recombination coefficient is about two to three orders of magnitude larger than the typical values convenient for realizing quantum degenerate gases. It also indicates a potentially large $s$-wave scattering length between the bosonic $^{7}$Li and $^{88}$Sr atoms, and essentially rules out the prospect of realizing $^7$Li and $^{88}$Sr mixtures of high phase space density. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_01098 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement of three-body recombination coefficient of ultracold lithium and strontium atoms Wang, Bo-Yang Wang, Yi-Fan An, Zi-He Xie, Li-Yang Ye, Zhu-Xiong Zhang, Yi Tey, Meng Khoon Atomic Physics Quantum Gases We report on the observation of a conspicuous loss in an ultracold mixture of $^{7}$Li and $^{88}$Sr atoms confined in a far-off-resonance optical dipole trap. We attribute the trap loss to the three-body inelastic Li-Sr-Sr collision and extract the corresponding three-body recombination coefficient $K_3$ at $T\sim 18.5,45,70,600$ $μK$. The measured three-body recombination coefficient is about two to three orders of magnitude larger than the typical values convenient for realizing quantum degenerate gases. It also indicates a potentially large $s$-wave scattering length between the bosonic $^{7}$Li and $^{88}$Sr atoms, and essentially rules out the prospect of realizing $^7$Li and $^{88}$Sr mixtures of high phase space density. |
| title | Measurement of three-body recombination coefficient of ultracold lithium and strontium atoms |
| topic | Atomic Physics Quantum Gases |
| url | https://arxiv.org/abs/2404.01098 |