Regensburg 2022 – scientific programme

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QI: Fachverband Quanteninformation

QI 3: Certification and Benchmarking of Quantum Systems

QI 3.9: Talk

Monday, September 5, 2022, 17:30–17:45, H8

Benchmarking quantum error correcting codes on near-term devices — •Regina Finsterhoelzl and Guido Burkard — Department of Physics, University of Konstanz

We evaluate the performance of small error-correcting codes which we implement on hardware platforms of very different connectivity and coherence: On a superconducting processor and on a spintronic quantum register consisting of a color center in diamond. Taking the hardware-specific errors and connectivity into account, we investigate the dependence of the resulting logical error rate on the platform features such as the native gates, the native connectivity, gate times, and coherence times. Using a standard error model parametrized for the given hardware, we simulate the performance and benchmark these predictions with experimental results when running the code on a real quantum device. The results indicate that for small codes, the hexagonal layout of the superconducting processor proves advantageous, yet for larger codes with multi-qubit controlled operations, the star-like connectivity of the color centers enables lower error rates.