A review on non-Hermitian skin effect
The past decades have witnessed the flourishing of non-Hermitian physics in non-
conservative systems, leading to unprecedented phenomena of unidirectional invisibility …
conservative systems, leading to unprecedented phenomena of unidirectional invisibility …
Active topological photonics
Topological photonics emerged as a novel route to engineer the flow of light. Topologically
protected photonic edge modes, which are supported at the perimeters of topologically …
protected photonic edge modes, which are supported at the perimeters of topologically …
Topological phases of non-Hermitian systems
While Hermiticity lies at the heart of quantum mechanics, recent experimental advances in
controlling dissipation have brought about unprecedented flexibility in engineering non …
controlling dissipation have brought about unprecedented flexibility in engineering non …
Probing non-Hermitian skin effect and non-Bloch phase transitions
S Longhi - Physical Review Research, 2019 - APS
In non-Hermitian crystals showing the non-Hermitian skin effect, ordinary Bloch band theory
and Bloch topological invariants fail to correctly predict energy spectra, topological boundary …
and Bloch topological invariants fail to correctly predict energy spectra, topological boundary …
Edge modes, degeneracies, and topological numbers in non-Hermitian systems
We analyze chiral topological edge modes in a non-Hermitian variant of the 2D Dirac
equation. Such modes appear at interfaces between media with different “masses” and/or …
equation. Such modes appear at interfaces between media with different “masses” and/or …
Bulk-boundary correspondence in a non-Hermitian system in one dimension with chiral inversion symmetry
Asymmetric coupling amplitudes effectively create an imaginary gauge field, which induces
a non-Hermitian Aharonov-Bohm (AB) effect. Nonzero imaginary magnetic flux invalidates …
a non-Hermitian Aharonov-Bohm (AB) effect. Nonzero imaginary magnetic flux invalidates …
Topological phases in the non-Hermitian Su-Schrieffer-Heeger model
S Lieu - Physical Review B, 2018 - APS
We address the conditions required for a Z topological classification in the most general form
of the non-Hermitian Su-Schrieffer-Heeger (SSH) model. Any chirally symmetric SSH model …
of the non-Hermitian Su-Schrieffer-Heeger (SSH) model. Any chirally symmetric SSH model …
Symmetry and topology in non-Hermitian physics
Non-Hermiticity enriches topological phases beyond the existing Hermitian framework.
Whereas their unusual features with no Hermitian counterparts were extensively explored, a …
Whereas their unusual features with no Hermitian counterparts were extensively explored, a …
Parity-time symmetry meets photonics: A new twist in non-Hermitian optics
S Longhi - Europhysics Letters, 2018 - iopscience.iop.org
In the past decade, the concept of parity-time $(\mathcal {PT}) $ symmetry, originally
introduced in non-Hermitian extensions of quantum mechanical theories, has come into …
introduced in non-Hermitian extensions of quantum mechanical theories, has come into …
Non-Hermitian many-body localization
Many-body localization is shown to suppress the imaginary parts of complex eigenenergies
for general non-Hermitian Hamiltonians having time-reversal symmetry. We demonstrate …
for general non-Hermitian Hamiltonians having time-reversal symmetry. We demonstrate …