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4 papers · 2 filters
Flat band in two-dimensional non-Hermitian optical lattices
S. M. Zhang, L. Jin
We propose a method to generate a real-energy flat band in a two-dimensional (2D) non-Hermitian Lieb lattice. The coincidence of the flat band eigenstate in both real and momentum…
Modelling Quantum Devices and the Reconstruction of Physics in Practical Systems
Hang Ren, Ying Li
Modelling quantum devices is to find a model according to quantum theory that can explain the result of experiments in a quantum device. We find that usually we cannot correctly id…
Non-Hermitian phase transition and eigenstate localization induced by asymmetric coupling
P. Wang, L. Jin, Z. Song
We investigate a uniformly coupled non-Hermitian system with asymmetric coupling amplitude. The asymmetric coupling equals to a symmetric coupling threaded by an imaginary gauge fi…
Flat band induced by the interplay of synthetic magnetic flux and non-Hermiticity
L. Jin
A flat band is nondispersive and formed under destructive interference. Although flat bands are found in various Hermitian systems, to realize a flat band in non-Hermitian systems…