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Physics

Quantum computer made of 6 super-sized atoms could imitate the brain

Simulations of a quantum computer made of six rubidium atoms suggest it could run a simple brain-inspired algorithm that can learn to remember and make simple decisions

By Karmela Padavic-Callaghan

13 August 2022

D79TNY Rubidium Chemical Element)

Rubidium Rydberg atoms are super-sized in diameter

Science Picture Co/Alamy

A quantum computer built using giant atoms controlled by laser light may be enough to imitate some functions of the brain, such as memory and decision-making.

Rodrigo Araiza Bravo at Harvard University and his colleagues used computer simulations to show that a new type of quantum computer could be built out of rubidium Rydberg atoms. These atoms are super-sized in diameter because some of their electrons orbit the nuclei at a large distance, and they are extremely sensitive to light so can be very precisely controlled by lasers.

The…

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