A partial-symmetry order parameter, J_{g,h,M}, is shown to extract the SPT invariants of two-dimensional mixed states protected jointly by strong and weak symmetries in CZX-type models.
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Detection of 2D SPT phases under decoherence
A partial-symmetry order parameter, J_{g,h,M}, is shown to extract the SPT invariants of two-dimensional mixed states protected jointly by strong and weak symmetries in CZX-type models.