Linhu Li
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View article: Configurable localized states in non-Hermitian extended Su–Schrieffer–Heeger model
Configurable localized states in non-Hermitian extended Su–Schrieffer–Heeger model Open
We study the one-dimensional non-Hermitian Su–Schrieffer–Heeger model with gain and loss at two different sublattices and tuned hopping amplitudes between nearest-neighboring sites based on periodic, linear, or exponential functions. A per…
View article: Anisotropic scaling localization in higher-dimensional non-Hermitian systems
Anisotropic scaling localization in higher-dimensional non-Hermitian systems Open
Spatial localization of quantum states is one of the focal points in condensed matter physics and quantum simulations, as it signatures profound physics such as nontrivial band topology and non-reciprocal non-Hermiticity. Yet, in higher di…
View article: Size-dependent critical localization
Size-dependent critical localization Open
Studying critical states in quasiperiodic systems is of great importance in localization physics. Previously identified critical states share a common characteristic: they exhibit persistent critical features in the thermodynamic limit. In…
View article: Size-Dependent Skin Effect Transitions in Weakly Coupled Non-Reciprocal Chains
Size-Dependent Skin Effect Transitions in Weakly Coupled Non-Reciprocal Chains Open
Non-Hermitian systems exhibit unique boundary phenomena absent in their Hermitian counterparts, most notably the non-Hermitian skin effect (NHSE). In this work, we explore a lattice model consisting of two coupled non-reciprocal chains, fo…
View article: Concurrent Skin-scale-free Localization and Criticality under Möbius Boundary Conditions in a Non-Hermitian Ladder
Concurrent Skin-scale-free Localization and Criticality under Möbius Boundary Conditions in a Non-Hermitian Ladder Open
Non-Hermitian systems possess exotic localization phenomena beyond their Hermitian counterparts, exhibiting massive accumulation of eigenstates at the system boundaries with different scaling behaviors. In this study, we investigate two we…
View article: Many-body critical non-Hermitian skin effect
Many-body critical non-Hermitian skin effect Open
Criticality in non-Hermitian systems unveils unique phase transitions and scaling behaviors beyond Hermitian paradigms, offering new insights into the interplay between gain/loss, non-reciprocity, and complex energy spectra. In this paper,…
View article: Intrinsic perturbation induced anomalous higher-order boundary states in non-Hermitian systems
Intrinsic perturbation induced anomalous higher-order boundary states in non-Hermitian systems Open
The behavior of higher-order boundary states in non-Hermitian systems is elusive and thereby finding the mechanism behind these states is both essential and significant. Here, we uncover a novel mechanism that induces anomalous higher-orde…
View article: Many-body critical non-Hermitian skin effect
Many-body critical non-Hermitian skin effect Open
Criticality in non-Hermitian systems unveils unique phase transitions and scaling behaviors beyond Hermitian paradigms, offering new insights into the interplay between gain/loss, non-reciprocity, and complex energy spectra. In this paper,…
View article: Observation of gauge field induced non-Hermitian helical skin effects
Observation of gauge field induced non-Hermitian helical skin effects Open
Synthetic gauge fields and non-Hermitian skin effects are pivotal to topological phases and non-Hermitian physics, each recently attracting great interest across diverse research fields. Realizing skin effects typically require nonreciproc…
View article: Inter-species topological phases via a dynamical gauge field
Inter-species topological phases via a dynamical gauge field Open
We uncover a class of inter-species topological phases in a one-dimensional lattice, loaded with two species of non-identical particles interacting via a dynamical gauge field (DGF). Two types of topological states are found to emerge from…
View article: Observation of gauge field induced non-Hermitian helical spin skin effects
Observation of gauge field induced non-Hermitian helical spin skin effects Open
Synthetic gauge fields and non-Hermitian skin effects are pivotal to topological phases and non-Hermitian physics, each recently attracting great interest across diverse research fields. Notably, realizing skin effects typically require no…
View article: Dynamical suppression of many-body non-Hermitian skin effect in anyonic systems
Dynamical suppression of many-body non-Hermitian skin effect in anyonic systems Open
The non-Hermitian skin effect (NHSE) is a fascinating phenomenon in nonequilibrium systems where eigenstates massively localize at the systems’ boundaries, pumping (quasi-)particles loaded in these systems unidirectionally to the boundarie…
View article: Non-Hermitian skin effect in fragmented Hilbert spaces of one-dimensional fermionic lattices
Non-Hermitian skin effect in fragmented Hilbert spaces of one-dimensional fermionic lattices Open
We discover that the interplay between Hilbert space fragmentation and multiple non-Hermitian pumping channels leads to distinct non-Hermitian skin effect (NHSE) in real and Fock spaces. Using an extended Hatano-Nelson model with next-near…
View article: Topological and fractal defect states in non-Hermitian lattices
Topological and fractal defect states in non-Hermitian lattices Open
Higher dimensions provide fertile ground for diverse topological phases and their associated localization phenomena, thanks to the rich geometric features of boundaries and defects. In this paper, we investigate non-Hermitian lattices with…
View article: Multiple topological transitions and spectral singularities in non-Hermitian Floquet systems
Multiple topological transitions and spectral singularities in non-Hermitian Floquet systems Open
The interplay between Floquet driving and non-Hermitian gain/loss could give rise to intriguing phenomena including topological funneling of light, edge-state delocalization, anomalous topological transitions and Floquet non-Hermitian skin…
View article: Topological phases of commensurate or incommensurate non-Hermitian Su-Schrieffer-Heeger lattices
Topological phases of commensurate or incommensurate non-Hermitian Su-Schrieffer-Heeger lattices Open
We theoretically investigate topological features of a one-dimensional\nSu-Schrieffer-Heeger lattice with modulating non-Hermitian on-site potentials\ncontaining four sublattices per unit cell. The lattice can be either\ncommensurate or in…
View article: Dynamical suppression of many-body non-Hermitian skin effect in Anyonic systems
Dynamical suppression of many-body non-Hermitian skin effect in Anyonic systems Open
The non-Hermitian skin effect (NHSE) is a fascinating phenomenon in nonequilibrium systems where eigenstates massively localize at the systems' boundaries, pumping (quasi-)particles loaded in these systems unidirectionally to the boundarie…
View article: Activating non-Hermitian skin modes by parity-time symmetry breaking
Activating non-Hermitian skin modes by parity-time symmetry breaking Open
Parity-time ( $${{{{{{{\mathcal{PT}}}}}}}}$$ ) symmetry is a cornerstone of non-Hermitian physics as it ensures real energies for stable experimental realization of non-Hermitian phenomena. In this work, we propose $${{{{{{{\mathcal{PT}}}…
View article: A brief review of hybrid skin-topological effect
A brief review of hybrid skin-topological effect Open
The finding of non-Hermitian skin effect (NHSE) has revolutionized our understanding of non-Hermitian topological phases, where the usual bulk-boundary correspondence is broken and new topological phases specific to non-Hermitian system ar…
View article: Observation of scale-free localized states induced by non-Hermitian defects
Observation of scale-free localized states induced by non-Hermitian defects Open
Wave localization is a fundamental phenomenon that appears universally in both natural materials and artificial structures and plays a crucial role in understanding the various physical properties of a system. Usually, a localized state ha…
View article: Topologically compatible non-Hermitian skin effect
Topologically compatible non-Hermitian skin effect Open
The bulk-boundary correspondence (BBC) relates in-gap boundary modes to bulk topological invariants. In certain non-Hermitian topological systems, conventional BBC becomes invalid in the presence of the non-Hermitian skin effect (NHSE), wh…
View article: A brief review of hybrid skin-topological effect
A brief review of hybrid skin-topological effect Open
The finding of non-Hermitian skin effect has revolutionized our understanding of non-Hermitian topological phases, where the usual bulk-boundary correspondence is broken and new topological phases specific to non-Hermitian system are uncov…
View article: Extrinsic higher-order topological corner states in AB-stacked transition-metal dichalcogenides
Extrinsic higher-order topological corner states in AB-stacked transition-metal dichalcogenides Open
Higher-order topological insulators (HOTIs) are a novel type of topological phases which supports $d$-dimensional topological boundary states in $D$-dimensional systems with $D-d>1$. In this work, we theoretically predict that interlayer c…
View article: Occupation-dependent particle separation in one-dimensional non-Hermitian lattices
Occupation-dependent particle separation in one-dimensional non-Hermitian lattices Open
We unveil an exotic phenomenon arising from the intricate interplay between non-Hermiticity and many-body physics, namely an occupation-dependent particle separation for hardcore bosons in a one-dimensional lattice driven by uni-directiona…
View article: Topological non-Hermitian skin effect
Topological non-Hermitian skin effect Open
This article reviews recent developments in the non-Hermitian skin effect (NHSE), particularly on its rich interplay with topology. The review starts off with a pedagogical introduction on the modified bulk-boundary correspondence, the syn…
View article: Kinked linear response from non-Hermitian cold-atom pumping
Kinked linear response from non-Hermitian cold-atom pumping Open
It is well known that non-Hermitian, non-reciprocal systems may harbor exponentially localized skin modes. However, in this work, we find that, generically, non-Hermiticity gives rise to abrupt and prominent kinks in the semi-classical wav…
View article: Activating non-Hermitian skin modes by parity-time symmetry breaking
Activating non-Hermitian skin modes by parity-time symmetry breaking Open
Parity-time ($\mathcal{PT}$) symmetry is a cornerstone of non-Hermitian physics as it ensures real energies for stable experimental realization of non-Hermitian phenomena. In this work, we propose $\mathcal{PT}$ symmetry as a paradigm for …
View article: Geometry-dependent skin effect and anisotropic Bloch oscillations in a non-Hermitian optical lattice
Geometry-dependent skin effect and anisotropic Bloch oscillations in a non-Hermitian optical lattice Open
The interplay between the non-Hermiticity and dimensionality gives rise to exotic characteristics in higher dimensions, with one representative phenomenon known as the geometry-dependent skin effect (GDSE), which refers to that the localiz…
View article: Topological Non-Hermitian skin effect
Topological Non-Hermitian skin effect Open
This article reviews recent developments in the non-Hermitian skin effect (NHSE), particularly on its rich interplay with topology. The review starts off with a pedagogical introduction on the modified bulk-boundary correspondence, the syn…