REVIEW 4 cited by
Observation of non-Hermitian bulk-boundary correspondence in quantum dynamics
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
Bulk-boundary correspondence, a central principle in topological matter relating bulk topological invariants to edge states, breaks down in a generic class of non-Hermitian systems that have so far eluded experimental effort. Here we theoretically predict and experimentally observe non-Hermitian bulk-boundary correspondence, a fundamental generalization of the conventional bulk-boundary correspondence, in discrete-time non-unitary quantum-walk dynamics of single photons. We experimentally demonstrate photon localizations near boundaries even in the absence of topological edge states, thus confirming the non-Hermitian skin effect. Facilitated by our experimental scheme of edge-state reconstruction, we directly measure topological edge states, which match excellently with non-Bloch topological invariants calculated from localized bulk-state wave functions. Our work unequivocally establishes the non-Hermitian bulk-boundary correspondence as a general principle underlying non-Hermitian topological systems, and paves the way for a complete understanding of topological matter in open systems.
Forward citations
Cited by 4 Pith papers
-
Non-Hermitian Quantum Adiabatic Algorithm
A history-decoupled Hamiltonian mapping makes non-Hermitian adiabatic quantum optimization pseudospectrally stable, achieving polynomial-time (per configuration) evolution on the CK maximum-independent-set benchmarks.
-
Reciprocal skin effect and its realization in a topolectrical circuit
A reciprocal non-Hermitian 2D lattice shows skin-mode localization on opposite edges for opposite momenta, demonstrated experimentally in a passive RLC circuit.
-
Observation of Metal-Insulator and Spectral Phase Transitions in Aubry-Andr\'e-Harper Models
A single-photon quantum-walk experiment realizes the unitary almost-Mathieu operator and observes metal-insulator, parity-time symmetry-breaking, and all-imaginary-quasienergy spectral transitions.
-
Non-Hermitian Floquet topological phases in the double-kicked rotor
The non-Hermitian double kicked rotor hosts Floquet topological phases labeled by two winding numbers, detectable by a generalized mean chiral displacement, with edge states counted by the bulk invariants.
Discussion (0). Continue with ORCID to comment.