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Paper 1

Fiber Bundle Codes: Breaking the $N^{1/2} \operatorname{polylog}(N)$ Barrier for Quantum LDPC Codes

Matthew B. Hastings, Jeongwan Haah, Ryan O'Donnell

Year
2020
Journal
arXiv preprint
DOI
arXiv:2009.03921
arXiv
2009.03921

We present a quantum LDPC code family that has distance $Ω(N^{3/5}/\operatorname{polylog}(N))$ and $\tildeΘ(N^{3/5})$ logical qubits. This is the first quantum LDPC code construction which achieves distance greater than $N^{1/2} \operatorname{polylog}(N)$. The construction is based on generalizing the homological product of codes to a fiber bundle.

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Paper 2

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