There are hundreds of thousands of atoms that are cooled to near absolute zero.

Physics 11 June 2022

Karmela Padavic- Callaghan is a writer.

Quantum boomerang

A hundred thousand atoms were held in a vacuum.

The lab is at the University of California, Santa Barbara.

For the first time, researchers have been able to demonstrate a strange phenomenon.

David Weld and his colleagues at the University of California, Santa Barbara cooled hundreds of thousands of lithium atoms in a small vacuum- sealed box. They used lasers to arrange the atoms in a line and keep them in a quantum state that they hoped would show the effects of the boomerang effect.

The laser was used to hit the atoms. They went from having a negative average momentum to a positive average one. The team found that if the same change happened to a ball, it would roll away.

It has proved difficult to demonstrate and study the idea that electrons could move inside a crystal filled with dirt. Weld and the team focused on very cold atoms which could be manipulated with lasers.

The experiment was presented at the conference.

He wants to find out if super cold atoms interact with each other very intensely. Seeing these very coordinated atoms could reveal something new about quantum physics.

There are more on this topic.