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Autonomous quantum error correction of Gottesman-Kitaev-Preskill states
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The Gottesman-Kitaev-Preskill (GKP) code encodes a logical qubit into a bosonic system with resilience against single-photon loss, the predominant error in most bosonic systems. Here we present experimental results demonstrating quantum error correction of GKP states based on reservoir engineering of a superconducting device. Error correction is made autonomous through an unconditional reset of an auxiliary transmon qubit. The lifetime of the logical qubit is shown to be increased from quantum error correction, therefore reaching the point at which more errors are corrected than generated.
Forward citations
Cited by 3 Pith papers
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Achieving computational gains with quantum error-correction primitives: Generation of long-range entanglement enhanced by error detection
Low-overhead error detection without logical encoding improves long-range CNOT fidelity and establishes a record 75-qubit GHZ state with genuine multipartite entanglement on IBM superconducting processors.
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Stroboscopic Stabilization of Cat Qubits
Stroboscopic small-Big-small sequences with an auxiliary qubit stabilize cat and squeezed-cat manifolds, preserve bit-flip bias, and partially correct single-photon loss without reservoir engineering.
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Quantum Resilience: Canadian Innovations in Quantum Error Correction and Quantum Error Mitigation
This review surveys Canadian work in quantum error correction and error mitigation and claims Canada holds a leading role in both fields.
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