Exceptional topology of non-Hermitian systems
The current understanding of the role of topology in non-Hermitian (NH) systems and its far-
reaching physical consequences observable in a range of dissipative settings are reviewed …
reaching physical consequences observable in a range of dissipative settings are reviewed …
Topological photonics
Topological photonics is a rapidly emerging field of research in which geometrical and
topological ideas are exploited to design and control the behavior of light. Drawing …
topological ideas are exploited to design and control the behavior of light. Drawing …
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 …
Edge solitons in nonlinear-photonic topological insulators
We show theoretically that a photonic topological insulator can support edge solitons that
are strongly self-localized and propagate unidirectionally along the lattice edge. The …
are strongly self-localized and propagate unidirectionally along the lattice edge. The …
Tenfold way for quadratic lindbladians
We uncover a topological classification applicable to open fermionic systems governed by a
general class of Lindblad master equations. These “quadratic Lindbladians” can be …
general class of Lindblad master equations. These “quadratic Lindbladians” can be …
Phase-dependent chiral transport and effective non-Hermitian dynamics in a bosonic Kitaev-Majorana chain
We study a 1D chain of noninteracting bosonic cavities which are subject to nearest-
neighbor parametric driving, thus realizing a bosonic Hamiltonian whose form is reminiscent …
neighbor parametric driving, thus realizing a bosonic Hamiltonian whose form is reminiscent …
Topological zero modes and edge symmetries of metastable Markovian bosonic systems
Tight bosonic analogs of free-fermionic symmetry-protected topological phases, and their
associated edge-localized excitations, have long evaded the grasp of condensed-matter …
associated edge-localized excitations, have long evaded the grasp of condensed-matter …
Topological quantum fluctuations and traveling wave amplifiers
It is now well established that photonic systems can exhibit topological energy bands.
Similar to their electronic counterparts, this leads to the formation of chiral edge modes …
Similar to their electronic counterparts, this leads to the formation of chiral edge modes …
Quantum-squeezing-induced point-gap topology and skin effect
LL Wan, XY Lü - Physical Review Letters, 2023 - APS
We theoretically predict the squeezing-induced point-gap topology together with a symmetry-
protected Z 2 “skin effect” in a one-dimensional (1D) quadratic-bosonic system. Protected by …
protected Z 2 “skin effect” in a one-dimensional (1D) quadratic-bosonic system. Protected by …
Topological symmetry classes for non-Hermitian models and connections to the bosonic Bogoliubov–de Gennes equation
S Lieu - Physical Review B, 2018 - APS
The Bernard-LeClair (BL) symmetry classes generalize the Altland-Zirnbauer classes in the
absence of Hermiticity. Within the BL scheme, time-reversal and particle-hole symmetry …
absence of Hermiticity. Within the BL scheme, time-reversal and particle-hole symmetry …