Illustration of optical control of a Feshbach resonance, which occurs when a laser (yellow) brings a molecular level (blue surface) close to the atomic scattering threshold (red surface). Selected for a Viewpoint in Physics and an Editors’ Suggestion.

From the article:

Quantum Dynamics with Spatiotemporal Control of Interactions in a Stable Bose-Einstein Condensate
Logan W. Clark, Li-Chung Ha, Chen-Yu Xu, and Cheng Chin
Phys. Rev. Lett. 115, 155301 (2015)

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