Victoria Atkinson is a freelance science journalist, specializing in chemistry and its interface with the natural and human-made worlds. Currently based in York (UK), she formerly worked as a science content developer at the University of Oxford, and later as a member of the Chemistry World editorial team.
Scientists recently created a never-before-seen four-atom molecule — the coldest of its kind ever made.
"Usually people use atoms or ions and what makes them somewhat controllable is the fact that you have a relatively limited number of quantum states," Roman Bause, a quantum optics researcher at the University of Groningen in the Netherlands, told Live Science. By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.All these additional quantum states open up more interesting quantum questions, but also make the molecules difficult to cool.
However, ultracold atoms are an excellent starting point to build ultracold molecules. Using a mixture of ultracold sodium and potassium atoms, Shi's team weakly associated these single particles into diatomic NaK molecules. But, by shining in precisely controlled microwaves, Shi's team overcame the clumping issue in the diatomic NaK molecules as they were cooled down to 134 nanokelvin.
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