How do quantum computers actually work? We break it down from qubits to quantum superposition. | New Scientist

Are quantum computers finally becoming useful? Quantum computers have long promised to do things ordinary machines cannot. Inspired by Richard Feynman’s idea of simulating nature using quantum physics itself, researchers have spent decades building ever larger machines, with limited practical results. That may now be starting to change. Recent experiments show quantum computers modelling magnetic materials, superconductivity and exotic states of matter that push classical computers to their limi