Quantum computers are about to get real

As the first qubit-based machines come online, scientists imagine the possibilities

IBM quantum computer

SEEKING QUANTUM SUPREMACY  Google, IBM and others are developing quantum computers. IBM has made its five-qubit computer accessible online for free, and the company is planning a 50-qubit computer for commercial use. The large tank shown here holds the cooling system that keeps a 17-qubit processor cold.

Andy Aaron/IBM Research/Flickr (CC BY-ND 2.0)

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