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Quantum Error Correction using the Surface Code with Superconducting Circuits
Wallraff, Andreas - ETH Zurich
Presentation on Thursday, Feb. 25, 2021, noon
Location: Virtual Seminars over Zoom Until Further Notice
Superconducting circuits are ideally suited for studying quantum phenomena at the macroscopic scale. Since complex circuits containing a few tens to a few hundreds of elements can be designed, fabricated, and operated with relative ease, they are one of the prime contenders for realizing quantum computers. Now academic and industrial labs work both on realizing universal fault-tolerant quantum computers and on implementing algorithms using noisy intermediate-scale quantum (NISQ) hardware. Building systems, which can address commercially relevant computational problems, however, still requires significant conceptual and technological progress. In this talk, I will first introduce how quantum error detection and correction is realized using the surface code. Then I will present our experimental results on quantum error detection in a distance-two surface code [1] and our progress towards error correction with a distance-three surface code. If time allows, I will discuss my perspective on the challenges we face on the route toward large-scale quantum processors based on superconducting circuits.
References
[1] C. K. Andersen et al., Nature Physics 16, 875–880 (2020)