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French Startup's 'Elevator Code' Boosts Quantum Computing Accuracy 10,000x

1/22/2026

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Summary

Story summary

Alice and Bob, a French startup, announced an 'elevator code' that reduces logical error rates in quantum computing by up to 10,000 times.
The approach moves logical qubits during computation and uses cat qubits that store information in both phases, inspired by Schrödinger’s cat experiment.
The method provides passive and active protection against bit flip errors.
The findings were shared on the arXiv preprint server.

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Story summary

Alice and Bob, a French startup, announced an 'elevator code' that reduces logical error rates in quantum computing by up to 10,000 times.
The approach moves logical qubits during computation and uses cat qubits that store information in both phases, inspired by Schrödinger’s cat experiment.
The method provides passive and active protection against bit flip errors.
The findings were shared on the arXiv preprint server.