理想气体中光学费什巴赫共振的系统研究
Systematic study of Optical Feshbach Resonances in an ideal gas
摘要：
使用一个狭窄的相互组合线在碱土金属原子，以减轻大的非弹性损耗，我们探讨了光学费什巴赫共振（OFR）的玻色子$^{88}$ Sr的超冷气体中的效果。一个系统的测量三个共振允许精确测定的OFR强度和标度律，与耦合通道理论。共振增强的复杂的散射长度导致热化介导的弹性和非弹性碰撞，否则理想气体。OFR可以用来控制原子相互作用的高空间和时间分辨率。
英文摘要：
Using a narrow intercombination line in alkaline earth atoms to mitigate large inelastic losses, we explore the Optical Feshbach Resonance (OFR) effect in an ultracold gas of bosonic $^{88}$Sr. A systematic measurement of three resonances allows precise determinations of the OFR strength and scaling law, in agreement with coupled-channels theory. Resonant enhancement of the complex scattering length leads to thermalization mediated by elastic and inelastic collisions in an otherwise ideal gas. OFR could be used to control atomic interactions with high spatial and temporal resolution.
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