Quantum error correction with superconducting circuit based qubits - Is it better first scale-up and then correct or first correct and then scale-up?

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FIG 2

(a) Visualization of a 2D tiling where X shape is the non-local tiling pattern. Colored squares visualize different almost-local tile coloring checks: If the parity of colors is even no tiling coloring error has occurred. (b) Schematic of a qubit grid quantum error correction code consisting of seven physical qubits, one logical qubit and three error check “tiles”.

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