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Dolev Bluvstein, Simon J. Evered, Alexandra A. Geim, Sophie H. Li, Hengyun Zhou, Tom Manovitz, Sepehr Ebadi, Madelyn Cain, Marcin Kalinowski, Dominik Hangleiter and 11 more
Suppressing errors is the central challenge for useful quantum computing 1 , requiring quantum error correction (QEC) 2–6 for large-scale processing. However, the overhead in the realization of error-corrected ‘logical’ qubits, in which information is encoded across many physical qubits for redundancy 2–4 , poses substantial challenges to large-scale logical quantum computing. Here we report the realization of a programmable quantum processor based on encoded logical qubits operating with up to 280 physical qubits. Using logical-level control and a zoned architecture in reconfigurable neutral-atom arrays 7 , our system combines high two-qubit gate fidelities 8 , arbitrary connectivity 7,9 , as well as fully programmable single-qubit rotations and mid-circuit readout 10–15 . Operating this logical processor with various types of encoding, we demonstrate improvement of a two-qubit logic gate by scaling surface-code 6 distance from d = 3 to d = 7, preparation of colour-code qubits with break-even fidelities 5 , fault-tolerant creation of logical Greenberger–Horne–Zeilinger (GHZ) states and feedforward entanglement teleportation, as well as operation of 40 colour-code qubits. Finally, using 3D [[8,3,2]] code blocks 16,17 , we realize computationally complex sampling circuits 18 with up to 48 logical qubits entangled with hypercube connectivity 19 with 228 logical two-qubit gates and 48 logical CCZ gates 20 . We find that this logical encoding substantially improves algorithmic performance with error detection, outperforming physical-qubit fidelities at both cross-entropy benchmarking and quantum simulations of fast scrambling 21,22 . These results herald the advent of early error-corrected quantum computation and chart a path towards large-scale logical processors.
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Bluvstein, D., Evered, S. J., Geim, A. A., Li, S. H., Zhou, H., Manovitz, T., Ebadi, S., Cain, M., Kalinowski, M., Hangleiter, D., Ataides, J. P. B., Maskara, N., Cong, I., Gao, X., Rodriguez, P. S., Karolyshyn, T., Semeghini, G., Gullans, M. J., Greiner, M., … Lukin, M. D. (2023). Logical quantum processor based on reconfigurable atom arrays. Nature, 626(7997), 58–65. https://doi.org/10.1038/s41586-023-06927-3
Bluvstein, Dolev, et al. "Logical quantum processor based on reconfigurable atom arrays." Nature, vol. 626, no. 7997, 2023, pp. 58–65, https://doi.org/10.1038/s41586-023-06927-3.
Bluvstein, Dolev, Simon J. Evered, Alexandra A. Geim, Sophie H. Li, Hengyun Zhou, Tom Manovitz, Sepehr Ebadi, et al. "Logical quantum processor based on reconfigurable atom arrays." Nature 626, no. 7997 (2023): 58–65. https://doi.org/10.1038/s41586-023-06927-3.
Bluvstein D., Evered S. J., Geim A. A. [и др.] Logical quantum processor based on reconfigurable atom arrays // Nature. — 2023. — Vol. 626, № 7997. — P. 58–65. — URL: https://doi.org/10.1038/s41586-023-06927-3
@article{bluvstein2023logical,
title = {{Logical quantum processor based on reconfigurable atom arrays}},
author = {Dolev Bluvstein and Simon J. Evered and Alexandra A. Geim and Sophie H. Li and Hengyun Zhou and Tom Manovitz and Sepehr Ebadi and Madelyn Cain and Marcin Kalinowski and Dominik Hangleiter and J. Pablo Bonilla Ataides and Nishad Maskara and Iris Cong and Xun Gao and Pedro Sales Rodriguez and Thomas Karolyshyn and Giulia Semeghini and Michael J. Gullans and Markus Greiner and Vladan Vuletić and Mikhail D. Lukin},
journal = {Nature},
year = {2023},
volume = {626},
number = {7997},
pages = {58--65},
doi = {10.1038/s41586-023-06927-3},
url = {https://doi.org/10.1038/s41586-023-06927-3}
}TY - JOUR AU - Bluvstein, Dolev AU - Evered, Simon J. AU - Geim, Alexandra A. AU - Li, Sophie H. AU - Zhou, Hengyun AU - Manovitz, Tom AU - Ebadi, Sepehr AU - Cain, Madelyn AU - Kalinowski, Marcin AU - Hangleiter, Dominik AU - Ataides, J. Pablo Bonilla AU - Maskara, Nishad AU - Cong, Iris AU - Gao, Xun AU - Rodriguez, Pedro Sales AU - Karolyshyn, Thomas AU - Semeghini, Giulia AU - Gullans, Michael J. AU - Greiner, Markus AU - Vuletić, Vladan AU - Lukin, Mikhail D. TI - Logical quantum processor based on reconfigurable atom arrays JO - Nature VL - 626 IS - 7997 SP - 58 EP - 65 PY - 2023 DA - 2023/12/06 DO - 10.1038/s41586-023-06927-3 UR - https://doi.org/10.1038/s41586-023-06927-3 ER -
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