Alex Bocharov explains why the company is hoping to build qubits out of particles that some scientists think might not even exist.

 

The race is on build a ‘universal’ quantum computer. Such a device could be programmed to speedily solve problems that classical computers cannot crack, potentially revolutionizing fields from pharmaceuticals to cryptography. Many of the world’s major technology firms are taking on the challenge, but Microsoft has opted for a more tortuous route than its rivals.

IBM, Google and a number of academic labs have chosen relatively mature hardware, such as loops of superconducting wire, to make quantum bits (qubits). These are the building blocks of a quantum computer: they power its speedy calculations thanks to their ability to be in a mixture (or superposition) of ‘on’ and ‘off’ states at the same time.

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