Amazon cloud subsidiary Amazon Web Services (AWS) has revealed a new architecture for a fault-tolerant quantum computer that could ensure quantum bits (qubits) execute calculations with maximum accuracy.
The architecture presents a system based on "cat states"—a form of passive quantum error correction (QEC) where qubits are superpositioned within an oscillator, while photon pairs are injected and extracted to guarantee the quantum state's stability.
This design can reduce bit-flip error, but the AWS team proposed coupling passive QEC with known active QEC methods for safeguards against other types of error.
The resulting architecture enables just over 2,000 superconducting components used for stabilization to produce 100 logical qubits capable of executing 1,000 gates.
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