Majorana zero modes in the Kitaev chain protect boundary quantum Fisher information from delocalization, maintaining a nonzero plateau for exponentially long times.
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Semi-Dirac materials can support four corner-localized Majorana zero modes by turning their anisotropic non-chiral edge states into effective Kitaev chains via s-wave proximity pairing.
Constraint mismatch at the junction of two PXP chains creates a tunable kinematic barrier to quantum information flow and fragments the Hilbert space into disjoint sectors.
A gain-loss modulated non-Hermitian reservoir between mirror-symmetric systems can exhibit complementary Lucas sequences in linearly localized edge states and a constant-intensity mode.
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Tunable information insulation induced by constraint mismatch
Constraint mismatch at the junction of two PXP chains creates a tunable kinematic barrier to quantum information flow and fragments the Hilbert space into disjoint sectors.