49 citations · 135 across the 8 of their papers we have counts for
8 papers
Proof of bulk-edge correspondence for band topology by Toeplitz algebra
Zixian Zhou, Liang-Liang Wan
We rigorously yet concisely prove the bulk-edge correspondence for general -dimensional (D) topological insulators in complex Altland-Zirnbauer classes, which states that the…
Topological bosonic Bogoliubov excitations with sublattice symmetry
Ling-Xia Guo, Liang-Liang Wan, Liu-Gang Si +2
Here we investigate the internal sublattice symmetry, and thus the enriched topological classification of bosonic Bogoliubov excitations of thermodynamically stable free-boson syst…
Quantum-Squeezing-Induced Point-Gap Topology and Skin Effect
Liang-Liang Wan, Xin-You Lü
We theoretically predict the squeezing-induced point-gap topology together with a {\it symmetry-protected skin effect} in a one-dimensional (1D) quadratic-bosonic sy…
Out-of-Time-Order Correlation as a Witness for Topological Phase Transitions
Qian Bin, Liang-Liang Wan, Franco Nori +2
We propose a physical witness for dynamically detecting topological phase transitions (TPTs) via an experimentally observable out-of-time-order correlation (OTOC). The distinguisha…
Squeezing-induced Topological Gap Opening on Bosonic Bogoliubov Excitations
Liang-Liang Wan, Zixian Zhou, Zhi-Fang Xu
We investigate the role of squeezing interaction in inducing topological Bogoliubov excitations of a bosonic system. We introduce a squeezing transformation which is capable of red…
Topological Classification of Excitations in Quadratic Bosonic Systems
Zixian Zhou, Liang-Liang Wan, Zhi-Fang Xu
We investigate the topological classification of excitations in quadratic bosonic systems with an excitation band gap. Time-reversal, charge-conjugation, and parity symmetries in b…
Controllable nonlinearity in a dual-coupling optomechanical system under a weak-coupling regime
Gui-Lei Zhu, Xin-You Lü, Liang-Liang Wan +3
Strong quantum nonlinearity gives rise to many interesting quantum effects and has wide applications in quantum physics. Herewe investigate the quantum nonlinear effect of an optom…
Hybrid Interference Induced Flat Band Localization in Bipartite Optomechanical Lattices
Liang-Liang Wan, Xin-You Lü, Jin-Hua Gao +1
The flat band localization, as an important phenomenon in solid state physics, is fundamentally interesting in the exploration of exotic ground property of many-body system. Here w…