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QuEra sells neutral-atom machines with 256 and 260 physical qubits, while Harvard and MIT teams that include its co-founders have run arrays of more than 3,000 atoms. Its Libra computer, due in 2028, is the test.
The Amazon Web Services researcher labeled his paper a preliminary draft, marked four proofs as sketches, and cited personal communications for its lattice corollary. He described no attack on ML-KEM, ML-DSA, or any NIST parameter set.
QuEra said Libra will be available on Amazon Braket starting in 2028 and called the machine's specifications projected. Neither QuEra's release nor AWS's blog post gave the number of physical qubits the neutral-atom machine will use.
