Journal
PHYSICAL REVIEW A
Volume 86, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.86.062318
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Funding
- IARPA under ARO [W911NF-10-1-0334]
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We consider realistic, multiparameter error models and investigate the performance of the surface code for three possible fault-tolerant superconducting quantum computer architectures. We map amplitude and phase damping to a diagonal Pauli depolarization channel via the Pauli twirl approximation, and obtain the logical error rate as a function of the qubit T-1,T-2 and state preparation, gate, and readout errors. A numerical Monte Carlo simulation is performed to obtain the logical error rates, and a leading-order analytic formula is derived to estimate their behavior below threshold. Our results suggest that scalable fault-tolerant quantum computation should be possible with existing superconducting devices.
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