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Re:Rigetti Computing to go public by wadeparzival on Wednesday October 06, 2021 @10:06AM (#28773352)
IBM has a similar timeline in its roadmap, going from 65 qubits in 2020 to 1,121 qubits in 2023. From their blog [1], it seems like scaling beyond 1,000 will be the real challenge.

[1] https://research.ibm.com/blog/ibm-quantum-roadmap

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