Reality check: no one has ever built a quantum computer with qubits lasting more than a tiny fraction of a second, and quite possibly they never will.
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Companies like
@QuantinuumQC already have quantum computers with qubits that last more than a second (T1 & T2 > 1s). Although that said, qubit lifetime by itself doesn't tell the full story about computational power.https://www.honeywell.com/us/en/company/quantum/quantum-computer …
This is just an unvalidated claim from a vendor, as far as I can tell. Prior experience counsels skepticism.
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The Honeywell team has actually published quite a bit of data in peer-reviewed journals, for example Nature 592 209–213 (2021).
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I don't see any qubits lasting longer than a millisecond in this paper.
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