Heather Leitch, Alastair Kay (May 21 2025).

Abstract: The discovery of the family of balanced product codes was pivotal in the subsequent development of `good' low density quantum error correcting codes that have optimal scaling of the key parameters of distance and storage density. We review this family, giving a completely different presentation to the original, minimising the abstraction and technicalities wherever possible.

Arxiv: https://arxiv.org/abs/2505.13679