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Entanglement Negativity at Measurement-Induced Criticality
Shengqi Sang, Yaodong Li, Tianci Zhou +3
We propose entanglement negativity as a fine-grained probe of measurement-induced criticality. We motivate this proposal in stabilizer states, where for two disjoint subregions, co…
Statistical mechanics of quantum error correcting codes
Yaodong Li, Matthew P. A. Fisher
We study stabilizer quantum error correcting codes (QECC) generated under hybrid dynamics of local Clifford unitaries and local Pauli measurements in one dimension. Building upon 1…
Emergent conformal symmetry in non-unitary random dynamics of free fermions
Xiao Chen, Yaodong Li, Matthew P. A. Fisher +1
We present random quantum circuit models for non-unitary quantum dynamics of free fermions in one spatial dimension. Numerical simulations reveal that the dynamics tends towards st…
Conformal invariance and quantum non-locality in critical hybrid circuits
Yaodong Li, Xiao Chen, Andreas W. W. Ludwig +1
We establish the emergence of a conformal field theory (CFT) in a (1+1)-dimensional hybrid quantum circuit right at the measurement-driven entanglement transition by revealing spac…