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Creators/Authors contains: "Graham, T. M."

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  1. ; ; ; ; ; ; ; (, PRX Quantum)
    We simulate the Lipkin-Meshkov-Glick model using the variational-quantum-eigensolver algorithm on a neutral atom quantum computer. We test the ground-state energy of spin systems with up to 15 spins. Two different encoding schemes are used: an individual spin encoding where each spin is represented by one qubit, and an efficient Gray code encoding scheme that only requires a number of qubits that scales with the logarithm of the number of spins. This more efficient encoding, together with zero-noise extrapolation techniques, is shown to improve the fidelity of the simulated energies with respect to exact solutions. Published by the American Physical Society2025 
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    Free, publicly-accessible full text available June 1, 2026
  2. ; ; ; ; (, Physical Review A)
    Free, publicly-accessible full text available February 1, 2026
  3. ; ; ; (, International Journal of Quantum Information)
    In this study, we simulated the algorithmic performance of a small neutral atom quantum computer and compared its performance when operating with all-to-all versus nearest-neighbor connectivity. This comparison was made using a suite of algorithmic benchmarks developed by the Quantum Economic Development Consortium. Circuits were simulated with a noise model consistent with experimental data from [Nature 604, 457 (2022)]. We find that all-to-all connectivity improves simulated circuit fidelity by [Formula: see text]–[Formula: see text], compared to nearest-neighbor connectivity. 
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  4. ; ; ; ; ; ; ; ; ; (, Physical Review X)
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  5. ; ; ; ; ; ; ; (, Physical Review A)
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  6. ; ; (, Physical Review A)
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  7. ; ; ; ; ; ; ; ; ; ; et al (, Nature)
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  8. ; ; ; ; ; ; ; ; (, Physical Review Letters)
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