Previously, detecting topological order relied upon strictly enforcing conditions governing how quantum information flows. Now, calculations reveal this invariance persists even when these rules are only approximately obeyed, provided conditional mutual information between entangled regions does not fall below a quantifiable threshold. This extends existing theorems and broadens application to systems previously considered too disordered for reliable measurement.
Robust Probe Links Deformation Invariance to Minimal Mutual Information
Previously, detecting topological order relied upon strictly enforcing conditions governing how quantum information flows. Now, calculations reveal this invariance persists even when these rules are only approximately obeyed, provided conditional mutual information between entangled regions does not fall below a quantifiable threshold. This extends existing theorems and broadens application to systems previously considered too disordered for reliable measurement.