A multi-atom Rydberg gate with N ancillae enables N-fold photon collection for fast neutral-atom measurement, achieving infidelity below 10^{-3} in 6 μs with N=5 in Cs-Rb simulations.
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Heterogeneous quantum architectures with task-specific hardware and QEC encodings deliver up to 138x lower physical-qubit overhead than monolithic baselines for fault-tolerant algorithms, including RSA-2048 factoring at 190k-381k qubits.
A new optimal-control scheme achieves high-fidelity two-qubit iSWAP gates for Rydberg atoms at separations exceeding 20 micrometers through coherent excitation-exchange-deexcitation dynamics.
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Fast measurement of neutral atoms with a multi-atom gate
A multi-atom Rydberg gate with N ancillae enables N-fold photon collection for fast neutral-atom measurement, achieving infidelity below 10^{-3} in 6 μs with N=5 in Cs-Rb simulations.
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Heterogeneous architectures enable a 138x reduction in physical qubit requirements for fault-tolerant quantum computing under detailed accounting
Heterogeneous quantum architectures with task-specific hardware and QEC encodings deliver up to 138x lower physical-qubit overhead than monolithic baselines for fault-tolerant algorithms, including RSA-2048 factoring at 190k-381k qubits.
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Fast Quantum Gates for Neutral Atoms Separated by a Few Tens of Micrometers
A new optimal-control scheme achieves high-fidelity two-qubit iSWAP gates for Rydberg atoms at separations exceeding 20 micrometers through coherent excitation-exchange-deexcitation dynamics.