Silicon breakthrough brings quantum computers a step closer

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A high-energy laser pulse (red) can modify the state of a phosphorus electron (yellow) within silicon (gray) so that its density distribution becomes the one highlighted in green. The output laser beams provide information on the superposition that was just created

Article Summary

An international team of researchers from the University of Surrey, UCL, Heriot-Watt University and the FOM Institute for Plasma Physics have used infra-red laser to obtain precise control of the quantum superpositions of an electron in silicon for the first time . This feat marks yet another leap toward the dream of an affordable, fast and reliable quantum computer.

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