Removing nuclear spins by means of isotopically purified silicon, and introducing magnetic field gradients by means of microfabricated ferromagnets yields electron spin qubits with enhanced fidelity and fast electrical control.
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De Franceschi, S. Fast and pure. Nature Nanotech 13, 95–96 (2018). https://doi.org/10.1038/s41565-017-0045-3
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DOI: https://doi.org/10.1038/s41565-017-0045-3
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