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Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Topological materials

Background:

  • Non-Bloch topological invariants are crucial for understanding non-Hermitian systems.
  • Bulk-boundary correspondence is a key concept in topological physics.

Purpose of the Study:

  • To experimentally detect non-Bloch topological invariants in a dynamic setting.
  • To verify the robustness of these invariants against disorder.
  • To explore their persistence in the thermodynamic limit.

Main Methods:

  • Single-photon quantum walks were employed to study topological phenomena.
  • Biorthogonal chiral displacement was used to detect non-Bloch invariants.
  • Dynamic spin textures in the generalized quasimomentum-time domain were analyzed post-quantum quench.

Main Results:

  • Successful dynamic detection of non-Bloch topological invariants was achieved.
  • The detection methods proved robust against symmetry-preserving disorders.
  • Experimental results consistently matched theoretical predictions.

Conclusions:

  • Non-Bloch topological invariants are intrinsic properties of non-Hermitian systems.
  • These invariants persist in the thermodynamic limit, independent of boundaries.
  • The study offers new experimental avenues for investigating non-Hermitian topology.