DOE OSTI · 3375639
Architecture for fast implementation of quantum low-density parity-check codes with optimized Rydberg gates
Abstract
Here, we propose an implementation of bivariate bicycle codes [S. Bravyi et al., Nature (London) 627, 778 (2024)] based on long-range Rydberg gates between stationary neutral atom qubits. An optimized layout of data and ancilla qubits reduces the maximum Euclidean communication distance needed for nonlocal parity-check operators. An optimized Rydberg gate pulse design enables 𝖢𝖹 entangling operations with fidelity $\mathscr{F}$ >0.999 at a distance greater than 12 µm. The combination of optimized layout and gate design leads to a quantum error correction cycle time of ∼1.28 ms for a [[144,12,12]] code, which is nearly a factor-of-two improvement over previous designs.
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Poole, C. [Univ. of Wisconsin, Madison, WI (United States)], Graham, T. M. [Univ. of Wisconsin, Madison, WI (United States)], Perlin, M. A. [Infleqtion, Inc., Chicago, IL (United States)] (ORCID:0000000293161596), Otten, M. [Univ. of Wisconsin, Madison, WI (United States)], Saffman, M. [Univ. of Wisconsin, Madison, WI (United States); Infleqtion, Inc., Madison, WI (United States)] (ORCID:0000000163982097). 2025-02-19. Architecture for fast implementation of quantum low-density parity-check codes with optimized Rydberg gates. https://doi.org/10.1103/physreva.111.022433
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