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DOE OSTI · 3366061

Fault-tolerant operation and materials science with neutral atom logical qubits

Chung, Woo Chang [Infleqtion, Boulder, CO (United States)]·Cole, Daniel C. [Infleqtion, Boulder, CO (United States)]·Gokhale, Pranav [Infleqtion, Boulder, CO (United States)]·Jones, Eric B. [Infleqtion, Boulder, CO (United States)]·Kuper, Kevin W. [Infleqtion, Boulder, CO (United States)]·Mason, David [Infleqtion, Boulder, CO (United States)]·Omole, Victory [Infleqtion, Boulder, CO (United States)]·Radnaev, Alexander G. [Infleqtion, Boulder, CO (United States)]·Rines, Rich [Infleqtion, Boulder, CO (United States)]·Teo, Mariesa H. [Univ. of Chicago, IL (United States)]·Bedalov, Matt J. [Infleqtion, Boulder, CO (United States)]·Blakely, Matt [Infleqtion, Boulder, CO (United States)]·Buttler, Peter D. [Infleqtion, Boulder, CO (United States)]·Carnahan, Caitlin [Infleqtion, Boulder, CO (United States)]·Chong, Frederic T. [Infleqtion, Boulder, CO (United States); Univ. of Chicago, IL (United States)]·Goiporia, Palash [Infleqtion, Boulder, CO (United States)]·Heim, Bettina [NVIDIA, Santa Clara, CA (United States)]·Hickman, Garrett T. [Infleqtion, Boulder, CO (United States)]·Jones, Ryan A. [Infleqtion, Boulder, CO (United States)]·Khalate, Pradnya [NVIDIA, Santa Clara, CA (United States)]·Kim, Jin-Sung [NVIDIA, Santa Clara, CA (United States)]·Lichtman, Martin T. [Infleqtion, Boulder, CO (United States)]·Lee, Stephanie [Infleqtion, Boulder, CO (United States)]·Neff-Mallon, Nathan A. [Infleqtion, Boulder, CO (United States)]·Noel, Thomas W. [Infleqtion, Boulder, CO (United States)]·Saffman, Mark [Infleqtion, Boulder, CO (United States); Univ. of Wisconsin, Madison, WI (United States)]·Shabtai, Efrat [NVIDIA, Santa Clara, CA (United States)]·Thotakura, Bharath [Infleqtion, Boulder, CO (United States)]·Tomesh, Teague [Infleqtion, Boulder, CO (United States)]·Tucker, Angela K. [Infleqtion, Boulder, CO (United States)]
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Abstract

We report on the fault-tolerant operation of logical qubits on a neutral atom quantum computer, with logical performance surpassing physical performance for multiple circuits including Bell state preparation (12x error reduction), random circuits (15x), and a prototype Anderson Impurity Model ground state solver for materials science applications (up to 6x, non-fault-tolerantly). The logical qubits are implemented via the [[4, 2, 2]] code (C 4 ). Our work constitutes the first complete realization of the benchmarking protocol proposed by Gottesman 2016 demonstrating results consistent with fault tolerance. In light of recent advances on applying concatenated C 4 /C 6 detection codes to achieve error correction with high code rates and thresholds, our work can be regarded as a building block towards a practical scheme for fault tolerant quantum computation. Our demonstration of a materials science application with logical qubits particularly demonstrates the immediate value of these techniques on current experiments.

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36 MATERIALS SCIENCE71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS74 ATOMIC AND MOLECULAR PHYSICScomputational methodsinformation theory and computationquantum informationqubit

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Chung, Woo Chang [Infleqtion, Boulder, CO (United States)], Cole, Daniel C. [Infleqtion, Boulder, CO (United States)], Gokhale, Pranav [Infleqtion, Boulder, CO (United States)], Jones, Eric B. [Infleqtion, Boulder, CO (United States)], Kuper, Kevin W. [Infleqtion, Boulder, CO (United States)], Mason, David [Infleqtion, Boulder, CO (United States)], Omole, Victory [Infleqtion, Boulder, CO (United States)], Radnaev, Alexander G. [Infleqtion, Boulder, CO (United States)], Rines, Rich [Infleqtion, Boulder, CO (United States)], Teo, Mariesa H. [Univ. of Chicago, IL (United States)], Bedalov, Matt J. [Infleqtion, Boulder, CO (United States)], Blakely, Matt [Infleqtion, Boulder, CO (United States)], Buttler, Peter D. [Infleqtion, Boulder, CO (United States)], Carnahan, Caitlin [Infleqtion, Boulder, CO (United States)], Chong, Frederic T. [Infleqtion, Boulder, CO (United States); Univ. of Chicago, IL (United States)], Goiporia, Palash [Infleqtion, Boulder, CO (United States)], Heim, Bettina [NVIDIA, Santa Clara, CA (United States)], Hickman, Garrett T. [Infleqtion, Boulder, CO (United States)], Jones, Ryan A. [Infleqtion, Boulder, CO (United States)], Khalate, Pradnya [NVIDIA, Santa Clara, CA (United States)], Kim, Jin-Sung [NVIDIA, Santa Clara, CA (United States)], Lichtman, Martin T. [Infleqtion, Boulder, CO (United States)], Lee, Stephanie [Infleqtion, Boulder, CO (United States)], Neff-Mallon, Nathan A. [Infleqtion, Boulder, CO (United States)], Noel, Thomas W. [Infleqtion, Boulder, CO (United States)], Saffman, Mark [Infleqtion, Boulder, CO (United States); Univ. of Wisconsin, Madison, WI (United States)], Shabtai, Efrat [NVIDIA, Santa Clara, CA (United States)], Thotakura, Bharath [Infleqtion, Boulder, CO (United States)], Tomesh, Teague [Infleqtion, Boulder, CO (United States)], Tucker, Angela K. [Infleqtion, Boulder, CO (United States)]. 2025-12-05. Fault-tolerant operation and materials science with neutral atom logical qubits. https://doi.org/10.1038/s41534-025-01095-w

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