Experiment on transmon hardware finds no logical-fidelity difference between coherent and stochastic error injection on distance-3 and distance-5 repetition codes, contrary to free-fermion simulations; authors hypothesize qubit-frequency drifts stochastify the coherent errors.
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Clifford-deformed elongated compass codes exhibit bias-dependent thresholds and outperform the XZZX surface code at moderate dephasing biases under code capacity noise.
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Coherent versus stochastic error injection on a repetition-code logical qubit in superconducting hardware
Experiment on transmon hardware finds no logical-fidelity difference between coherent and stochastic error injection on distance-3 and distance-5 repetition codes, contrary to free-fermion simulations; authors hypothesize qubit-frequency drifts stochastify the coherent errors.
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Clifford-Deformed Compass Codes
Clifford-deformed elongated compass codes exhibit bias-dependent thresholds and outperform the XZZX surface code at moderate dephasing biases under code capacity noise.