379 citations · 1.2k across the 24 of their papers we have counts for
24 papers
Antihelical Edge States in Two-dimensional Photonic Topological Metals
L. C. Xie, L. Jin, Z. Song
Topological edge states are the core of topological photonics. Here we introduce the antihelical edge states of time-reversal symmetric topological metals and propose a photonic re…
Two-dimensional anisotropic non-Hermitian Lieb lattice
L. C. Xie, H. C. Wu, X. Z. Zhang +2
We study an anisotropic two-dimensional non-Hermitian Lieb lattice, where the staggered gain and loss present in the horizontal and vertical directions, respectively. The intra-cel…
Untying links through anti-parity-time-symmetric coupling
H. C. Wu, X. M. Yang, L. Jin +1
We reveal how the vector field links are untied under the influence of anti-parity-time-symmetric couplings in a dissipative sublattice-symmetric topological photonic crystal latti…
Dynamic magnetization in non-Hermitian quantum spin system
X. Z. Zhang, L. Jin, Z. Song
We report a global effect induced by the local complex field, associated with the spin-exchange interaction. High-order exceptional point up to ()-level coalescence is created…
High-order exceptional points in supersymmetric arrays
S. M. Zhang, X. Z. Zhang, L. Jin +1
We employ the intertwining operator technique to synthesize a supersymmetric (SUSY) array of arbitrary size . The synthesized SUSY system is equivalent to a spin- under…
Hybrid exceptional point created from type III Dirac point
L. Jin, H. C. Wu, Bo-Bo Wei +1
Degeneracy (exceptional) points embedded in energy band are distinct by their topological features. We report different hybrid two-state coalescences (EP2s) formed through merging…
Helical resonant transport and purified amplification at an exceptional point
K. L. Zhang, L. Jin, Z. Song
We propose an application of a parity-time symmetric non-Hermitian Su-Schrieffer-Heeger (SSH) model by embedded it in a two-dimensional square lattice tube. The coalescence state a…
Inversion symmetric non-Hermitian Chern insulator
H. C. Wu, L. Jin, Z. Song
We propose a two-dimensional non-Hermitian Chern insulator with inversion symmetry, which is anisotropic and has staggered gain and loss in both x and y directions. In this system,…
Topological Phase Transition Independent of System Non-Hermiticity
K. L. Zhang, H. C. Wu, L. Jin +1
Non-Hermiticity can vary the topology of system, induce topological phase transition, and even invalidate the conventional bulk-boundary correspondence. Here, we show the introduci…
Bulk-Boundary Correspondence in a Non-Hermitian System in One Dimension with Chiral-Inversion Symmetry
L. Jin, Z. Song
Asymmetric coupling amplitudes effectively create an imaginary gauge field, which induces a non-Hermitian Aharonov-Bohm (AB) effect. Nonzero imaginary magnetic flux invalidates the…
Incident Direction Independent Wave Propagation and Unidirectional Lasing
L. Jin, Z. Song
We propose an incident direction independent wave propagation generated by properly assembling different unidirectional destructive interferences (UDIs), which is a consequence of…
An attractor dynamics in a non-Hermitian two-level system
C. Li, P. Wang, L. Jin +1
Exceptional point in non-Hermitian system possesses fascinating properties. We present an exactly solvable attractor dynamics for the first time from a two-level time dependent non…
Su-Schrieffer-Heeger chain with one pair of PT-symmetric defects
L. Jin, P. Wang, Z. Song
The topologically nontrivial edge states induce PT transition in Su-Schrieffer-Heeger (SSH) chain with one pair of gain and loss at boundaries. In this study, we investigated a pai…
Non-Hermitian description of the dynamics of inter-chain pair tunnelling
X. Z. Zhang, L. Jin, Z. Song
We study inter-chain pair tunnelling dynamics based on an exact two-particle solution for a two-leg ladder. We show that the Hermitian Hamiltonian shares a common two-particle eige…
Parallel dynamics between non-Hermitian and Hermitian systems
P. Wang, S. Lin, L. Jin +1
We study the connection between a family of non-Hermitian Hamiltonians H and Hermitian ones H based on exact solutions. In general, for a dynamic process in a non-Hermitian system…
Non-Hermitian interferometer: Unidirectional amplification without distortion
C. Li, L. Jin, Z. Song
A non-Hermitian interferometer can realize asymmetric transmission in the presence of imaginary potential and magnetic flux. Here, we propose a non-Hermitian dimer with an unequal…
Wave emission and absorption at spectral singularities
P. Wang, L. Jin, G. Zhang +1
We studied the critical dynamics of spectral singularities. The system investigated is a coupled resonator array with a side-coupled loss (gain) resonator. For a gain resonator, th…
Self-sustained emission in semi-infinite non-Hermitian systems at the exceptional point
X. Z. Zhang, L. Jin, Z. Song
Complex potential and non-Hermitian hopping amplitude are building blocks of a non-Hermitian quantum network. Appropriate configuration, such as PT-symmetric distribution, can lead…
Perfect State Transfer in PT-symmetric Non-Hermitian Networks
X. Z. Zhang, L. Jin, Z. Song
We systematically study the parity- and time-reversal (PT) symmetric non-Hermitian version of a quantum network proposed in the paper of Christandl et al. [Phys. Rev. Lett. 92, 187…
Scaling behavior and phase diagram of a PT-symmetric non-Hermitian Bose-Hubbard system
L. Jin, Z. Song
We study scaling behavior and phase diagram of a PT-symmetric non-Hermitian Bose-Hubbard model. In the free interaction case, using both analytical and numerical approaches, the me…
SU(2) symmetry in a Hubbard model with spin-orbit coupling
X. Z. Zhang, L. Jin, Z. Song
We study the underlying symmetry in a spin-orbit coupled tight-binding model with Hubbard interaction. It is shown that, in the absence of the on-site interaction, the system posse…
Fast transfer and efficient coherent separation of bound cluster in the extended Hubbard model
L. Jin, Z. Song
We study the formation and dynamics of the bound pair (BP) and bound triple (BT) in strongly correlated extended Hubbard model for both Bose and Fermi systems. We find that the ban…
Physics counterpart of the PT non-hermitian tight-binding chain
L. Jin, Z. Song
We explore an alternative way of finding the link between a PT non-Hermitian Hamiltonian and a Hermitian one. Based on the analysis of the scattering problem for an imaginary poten…
Generation of GHZ and W states for stationary qubits in spin network via resonance scattering
L. Jin, Z. Song
We propose a simple scheme to establish entanglement among stationary qubits based on the mechanism of resonance scattering between them and a single-spin-flip wave packet in desig…