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Quantum

Quantum Error Correction

I like an error that the decoder never sees, only the checks it lights. These experiments use Stim on stabiliser circuits, surface codes, and decoding.

A distance-5 surface code: three X errors light four checks, a matching joins them, and the errors and the correction together form a stabiliser.
Fig. 1A decoder sees only the four lit checks, and its correction differs from the errors yet cancels them. An illustrative error pattern on a d = 5 rotated surface code. The matching is an exhaustive minimum-weight pairing computed for this figure, not Stim or PyMatching output.
Stack
QEC, Surface Code, Stim, Error Correction
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Code

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