Abstract We present a new propagation rule for CSS codes. Starting with code $$[\![n,k,d]\!]_q$$ [ n , k d ] q , we construct parameters $$[\![n-2,...

We propose a new class of error-correcting dynamic codes in two and three dimensions that has no explicit connection to any parent subsystem code. The two-dimensional code, which we call the CSS Floquet is geometrically similar honeycomb code by Hastings Haah, also dynamically embeds an instantaneous toric However, unlike it possesses structure its gauge checks do not form Nevertheless, show ou...