Autonomous Quantum Error Correction of Gottesman-Kitaev-Preskill States

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 o...

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Bibliographic Details
Published in:Physical review letters 2024-04, Vol.132 (15), p.150607-150607, Article 150607
Main Authors: Lachance-Quirion, Dany, Lemonde, Marc-Antoine, Simoneau, Jean Olivier, St-Jean, Lucas, Lemieux, Pascal, Turcotte, Sara, Wright, Wyatt, Lacroix, Amélie, Fréchette-Viens, Joëlle, Shillito, Ross, Hopfmueller, Florian, Tremblay, Maxime, Frattini, Nicholas E, Camirand Lemyre, Julien, St-Jean, Philippe
Format: Article
Language:English
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Summary: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 fully autonomous through an unconditional reset of an auxiliary transmon qubit. We show that the lifetime of the logical qubit is increased from quantum error correction, therefore reaching the point at which more errors are corrected than generated.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.132.150607