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From Spintronics to Quantum Computer
… Instead of superconducting loops, the quantum information in the quantum computer Lepage and his colleagues are devising use the 'spin' of an electron—its inherent angular momentum, which can be up or down—to store quantum information. "Harnessing spin to power a functioning quantum computer is a more scalable approach than using superconductivity, and we believe that using spin could lead to a quantum computer which is far more robust, since spin interactions are set by the laws of nature," said Lepage. Using spin allows the quantum information to be more easily integrated with existing systems. The device developed in the current work is based on widely-used semiconductors with some minor modifications. ...
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