PGZ Realizing the Surface Code: Quantum Error Correction

Physikalische Gesellschaft Zürich

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Prof. Dr. Andreas Wallraff

Realizing the Surface Code: Quantum Error Correction

Donnerstag 7. April 2022, um 19:30 Uhr
ETH Hauptgebäude Hörsaal HG G3, Rämistrasse 101 und Live Stream über Zoom

/events/ss22/event.20220407/Wallraff_Qbits_150.jpg

False-color micrograph of the device realizing the concept with 17 transmon qubits (Bild http://arxiv.org/abs/2112.03708)

Superconducting electronic circuits are ideally suited for studying quantum physics and its applications. Since complex circuits containing hundreds or thousands of elements can be designed, fabricated, and operated with relative ease, they are one of the prime contenders for realizing quantum computers.

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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