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A Decoder for the Color Code with Boundaries
S. Turner, Josey Hanish, Eion Blanchard, Noah Davis, B. Cour·March 25, 2020
Physics
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Abstract
We introduce a decoder for the 3D color code with boundaries, which is a variation of the restriction decoder introduced by Kubicka and Delfosse. Specifically, we adapt the lift procedure to efficiently find a correction on qubits adjacent to a boundary. We numerically estimate a threshold of $4\% - 8\%$ for Pauli $X$ errors and a threshold of $0.7\% - 0.8\%$ for Pauli $Z$ errors. Our work is a first step towards characterizing the performance of Bomb\'{i}n's recently proposed ``colorful quantum computing.''