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arxiv: 2310.11400 · v2 · pith:QJBCJDIV · submitted 2023-10-17 · quant-ph · cond-mat.mes-hall

Autonomous quantum error correction of Gottesman-Kitaev-Preskill states

Dany Lachance-Quirion , Marc-Antoine Lemonde , Jean Olivier Simoneau , Lucas St-Jean , Pascal Lemieux , Sara Turcotte , Wyatt Wright , Am\'elie Lacroix
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Jo\"elle Fr\'echette-Viens Ross Shillito Florian Hopfmueller Maxime Tremblay Nicholas E. Frattini Julien Camirand Lemyre Philippe St-Jean
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classification quant-ph cond-mat.mes-hall
keywords errorcorrectionquantumqubitautonomousbosonicgottesman-kitaev-preskilllogical
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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.

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Cited by 1 Pith paper

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