3 papers
quant-ph2025
A simple universal routing strategy for reducing the connectivity requirements of quantum LDPC codes
Guangqi Zhao, Fei Yan, Xiaotong Ni
Quantum low-density parity-check codes reduce quantum error correction overhead but require dense, long-range connectivity that challenges hardware implementation, particularly for…
quant-ph2025
Improved energy barrier in higher-dimensional hypergraph product codes
Guangqi Zhao
Single-shot error correction outperforms conventional approaches by requiring only one round of stabilizer measurements for decoding, even in the presence of measurement errors. Th…
quant-ph2024
On the energy barrier of hypergraph product codes
Guangqi Zhao, Andrew C. Doherty, Isaac H. Kim
A macroscopic energy barrier is a necessary condition for self-correcting quantum memory. In this paper, we prove tight bounds on the energy barrier applicable to any quantum code…