Article 6J6TX What Coffee With Cream Can Teach Us About Quantum Physics

What Coffee With Cream Can Teach Us About Quantum Physics

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janrinok
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taylorvich writes:

https://www.sciencedaily.com/releases/2024/01/240124132830.htm

Add a dash of creamer to your morning coffee, and clouds of white liquid will swirl around your cup. But give it a few seconds, and those swirls will disappear, leaving you with an ordinary mug of brown liquid.

Something similar happens in quantum computer chips -- devices that tap into the strange properties of the universe at its smallest scales -- where information can quickly jumble up, limiting the memory capabilities of these tools.

That doesn't have to be the case, said Rahul Nandkishore, associate professor of physics at the University of Colorado Boulder.

In a new coup for theoretical physics, he and his colleagues have used math to show that scientists could create, essentially, a scenario where the milk and coffee never mix -- no matter how hard you stir them.

The group's findings may lead to new advances in quantum computer chips, potentially providing engineers with new ways to store information in incredibly tiny objects.

"Think of the initial swirling patterns that appear when you add cream to your morning coffee," said Nandkishore, senior author of the new study. "Imagine if these patterns continued to swirl and dance no matter how long you watched."

Researchers still need to run experiments in the lab to make sure that these never-ending swirls really are possible. But the group's results are a major step forward for physicists seeking to create materials that remain out of balance, or equilibrium, for long periods of time -- a pursuit known as "ergodicity breaking."

The team's findings appeared this week in the latest issue of Physical Review Letters.

Journal Reference:

David T. Stephen, Oliver Hart, Rahul M. Nandkishore. Ergodicity Breaking Provably Robust to Arbitrary Perturbations. Physical Review Letters, 2024; 132 (4) DOI: 10.1103/PhysRevLett.132.040401

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