Alice & Bob has proposed a new error-correction approach called “Elevator Codes” that could reduce logical error rates.

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Alice & Bob has proposed 'Elevator Codes,' a new quantum error-correction approach that could reduce logical error rates by up to 10,000× on cat qubit quantum computers while requiring only three times more qubits. The method extends their existing repetition-code scheme by adding active protection against bit-flip errors using a reusable logical ancilla qubit that moves through the code to detect errors. This approach aims to lower qubit overhead for fault-tolerant quantum computing and could enable large-scale applications like molecular simulation sooner than expected.

Alice & Bob Develops ‘Elevator Codes’ to Slash Error Rates on Cat Qubit Quantum Computers