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Ultracold matter

Ultracold matter

Physicists close in on a simpler route to quantum degenerate molecules

17 Apr 2020
Yellow spheres and yellow spheres attached to red spheres (representing sodium atoms and sodium-lithium molecules) bouncing around in a confined space
Molecular refrigerator: Sodium atoms (yellow spheres) collide with sodium-lithium molecules (combined-yellow-red spheres). The frost on the molecules indicates that they have reached a temperature of 200 nK. (Courtesy: Pilsu Heo, Micropicture, South Korea)
Cooling atoms to ultracold temperatures is a routine task in atomic physics labs, but molecules are

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Tim Wogan is a science writer based in the US
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