• Corpus ID: 237940510

Damping transition in an open generalized Aubry-Andr\'e-Harper model

  title={Damping transition in an open generalized Aubry-Andr\'e-Harper model},
  author={Peng He and Yu-Guo Liu and Jian-Te Wang and Shi-Liang Zhu},
  • Peng He, Yu-Guo Liu, +1 author Shi-Liang Zhu
  • Published 27 September 2021
  • Physics
Peng He, 2 Yu-Guo Liu, 2 Jian-Te Wang, 2 and Shi-Liang Zhu 4, ∗ School of Physics, Nanjing University, Nanjing 210093, China National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China Guangdong-Hong Kong Joint… 

Figures from this paper

Engineering Dissipative Quasicrystals
We discuss the systematic engineering of quasicrystals in open quantum systems where quasiperiodicity is introduced through purely dissipative processes. While the resulting short-time dynamics is


Observation of the topological soliton state in the Su–Schrieffer–Heeger model
The Su–Schrieffer–Heeger model, which captures the most striking transport properties of the conductive organic polymer trans-polyacetylene, provides perhaps the most basic model system supporting topological excitations, and quantum simulation of this model and observation of the localized topological soliton state are reported on.
Topological characterizations of an extended Su–Schrieffer–Heeger model
The Su–Schrieffer–Heeger (SSH) model perhaps is the easiest and the most basic model for topological excitations. Many variations and extensions of the SSH model have been proposed and explored to
Topological zero-energy modes in gapless commensurate Aubry-André-Harper models.
It is shown that the commensurate off-diagonal AAH model is topologically nontrivial in the gapless regime and supports zero-energy edge modes.
Information Restrain in Open Quantum Systems
Non-Hermitian skin effect of Liouvillian superoperators in quantum open systems can induce phenomena of non-trivial damping, known as chiral/helical damping. While non-Hermitian skin effect and
Observation of bulk Fermi arc and polarization half charge from paired exceptional points
This work theoretically proposed and experimentally demonstrated a bulk Fermi arc that develops from non-Hermitian radiative losses in an open system of photonic crystal slabs, and discovers half-integer topological charges in the polarization of far-field radiation around the bulk Fermani arc.
Vortex pinning and non-Hermitian quantum mechanics
A delocalization phenomenon is studied in a class of non-Hermitian random quantum-mechanical problems. Delocalization arises in response to a sufficiently large constant imaginary vector potential.
Observation of the topological Anderson insulator in disordered atomic wires
This work synthesized one-dimensional chiral symmetric wires with controllable disorder via spectroscopic Hamiltonian engineering and observed the bulk evolution of a topological indicator after a sudden quench and the topological Anderson insulator phase, in which added disorder drives the band structure of a wire from topologically trivial to nontrivial.
Topological phases in non-Hermitian Aubry-André-Harper models
Topological phases have recently witnessed a rapid progress in non-Hermitian systems. Here we study a one-dimensional non-Hermitian Aubry-Andre-Harper model with imaginary periodic or quasiperiodic
Topological States and adiabatic pumping in quasicrystals.
It is shown, both theoretically and experimentally, that one-dimensional quasicrystals are assigned two-dimensional Chern numbers and, respectively, exhibit topologically protected boundary states equivalent to the edge states of a two- dimensional quantum Hall system.
Topological Phases of Non-Hermitian Systems
Recent experimental advances in controlling dissipation have brought about unprecedented flexibility in engineering non-Hermitian Hamiltonians in open classical and quantum systems. A particular