Author

Qiang-Da Xu

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Preprint Oct 2026

Single-shot magic state factories for quantum LDPC codes

Quantum low-density parity-check (qLDPC) codes can substantially reduce the qubit overhead of fault-tolerant quantum computation, but any useful architecture based on such codes also requires an efficient mechanism to implement non-Clifford gates in a fault-tolerant manner. We introduce a space-time-efficient magic sta...

Varun Menon, Rohan Mehta, An-Di Gu et al. · 1 citation

Preprint Jul 2026

High-rate qLDPC processors

Mitten codes are introduced, a family of qLDPC processor codes of encoding rate of encoding rate of $20 and check weight of $9, based on non-abelian groups, allowing mitten codes to reach distance $18 and beyond with just a few hundred data qubits.

Aditya Bhardwaj, Mu-Zhou Ma, N. Meister et al. · 9 citations · ⚡2

Preprint Jul 2026

Logical computation with canonical lifted product codes

This work co-designs the code together with its logical instruction set for a broad family of lifted-product (LP) codes with cyclic symmetry, and shows that these codes admit a canonical logical basis, analogous to the structure that makes hypergraph-product codes so tractable.

Han Zheng, Guo Zheng, Liang Jiang et al. · 5 citations