Scientists at the U.S. Department of Energy's Argonne National Laboratory and Stanford University have extended the coherence time for a unique class of quantum bit (qubit) to 0.1 milliseconds, topping the previous record by nearly 1,000-fold.
A single electron trapped on an ultraclean solid-neon surface within a vacuum forms the qubit; the neon ensures a long coherence time by protecting against environmental interference.
Argonne's Dafei Jin said, "Rather than 10 to 100 operations over the coherence times of conventional electron-charge qubits, our qubits can perform 10,000 with very high precision and speed."
The researchers made the qubit sufficiently scalable to link with other qubits, demonstrating that two-electron qubits can pair to the same superconducting circuit to enable information transfer.
From Argonne National Laboratory
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Abstracts Copyright © 2023 SmithBucklin, Washington, D.C., USA
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