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quant-ph2026
Topological subsystem bivariate bicycle codes with four-qubit check operators
Zijian Liang, Yu-An Chen
High-rate bivariate bicycle (BB) codes are promising low-overhead quantum memories, but their stabilizer checks typically have weight or higher, making syndrome extraction chal…
quant-ph2026
Resolving spurious topological entanglement entropy in stabilizer codes
Peilun Han, Zijian Liang, Yifei Wang +3
Topological entanglement entropy (TEE) is a key diagnostic of long-range entanglement in two-dimensional gapped phases of matter, but it can suffer from spurious contributions that…