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Physics

Quantum Rubik's cube has infinite patterns but is still solvable

Allowing for moves that create quantum superpositions makes a quantum version of a Rubik’s cube incredibly complex, but not impossible to solve

By Karmela Padavic-Callaghan

8 November 2024

How many moves does it take to solve a Rubik’s cube if it is quantum?

Shutterstock/Domanin

A quantum Rubik’s cube would be infinitely more complex than the traditional puzzle, but mathematical modelling shows it wouldn’t be unsolvable.

In the summer of 2022, and at the University of Colorado Boulder and their colleagues made a bet: how many possible states would a quantum Rubik’s cube have? To even make their guesses, they first had to define what a quantum Rubik’s cube would entail.

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