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M. A. Norcia; W. B. Cairncross; K. Barnes; P. Battaglino; A. Brown; M. O. Brown; K. Cassella; C.-A. Chen; R. Coxe; D. Crow; J. Epstein; C. Griger; A. M. W. Jones; H. Kim; J. M. Kindem; J. King; S. S. Kondov; K. Kotru; J. Lauigan; M. Li; M. Lu; E. Megidish; J. Marjanovic; M. McDonald; T. Mittiga; J. A. Muniz; S. Narayanaswami; C. Nishiguchi; R. Notermans; T. Paule; K. A. Pawlak; L. S. Peng; A. Ryou; A. Smull; D. Stack; M. Stone; A. Sucich; M. Urbanek; R. J. M. van de Veerdonk; Z. Vendeiro; T. Wilkason; T.-Y. Wu; X. Xie; X. Zhang; B. J. Bloom
Physical review. X, 11/2023, Letnik: 13, Številka: 4Journal Article
Measurement-based quantum error correction relies on the ability to determine the state of a subset of qubits (ancillas) within a processor without revealing or disturbing the state of the remaining qubits. Among neutral-atom-based platforms, a scalable, high-fidelity approach to midcircuit measurement that retains the ancilla qubits in a state suitable for future operations has not yet been demonstrated. In this work, we perform maging using a narrow-linewidth transition in an array of tweezer-confined ^{171}Yb atoms to demonstrate nondestructive state-selective and site-selective detection. By applying site-specific light shifts, selected atoms within the array can be hidden from imaging light, which allows a subset of qubits to be measured while causing only percent-level errors on the remaining qubits. As a proof-of-principle demonstration of conditional operations based on the results of the midcircuit measurements, and of our ability to reuse ancilla qubits, we perform conditional refilling of ancilla sites to correct for occasional atom loss, while maintaining the coherence of data qubits. Looking toward true continuous operation, we demonstrate loading of a magneto-optical trap with a minimal degree of qubit decoherence.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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