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Old 10-21-2014, 02:25 PM
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PriyankaDhariwal PriyankaDhariwal is offline
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Default Quantum computer buyers' guide: Hardware

This is the grandaddy of all quantum computer tech. Back in 1962, Cambridge physicist Brian Josephson showed that putting a small gap into a strip of superconductor a material that has zero resistance to the flow of electricity at low temperatures has a surprising effect. For example, superconducting loops incorporating such a "Josephson junction" let current flow clockwise and anticlockwise simultaneously. That's a superposition of states just what you need for a qubit.

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