Currently, both academic and industrial labs vigorously pursue the realization of universal fault-tolerant quantum computers. However, building systems which can address commercially relevant computational problems continues to require significant conceptual and technological progress.
In this talk, I will introduce how quantum error correction is realized using the surface code. Then I will present our experimental realization of quantum error detection and error correction in a distance-three surface code [1,2]. If time allows, I plan to discuss the challenges we face on the route toward large-scale quantum information processors.
[1] C. K. Andersen et al., Nature Physics 16, 875–880 (2020)
[2] S. Krinner, N. Lacroix et al., arXiv:2112.03708 [quant-ph] (2021)
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