138 citations · 537 across the 10 of their papers we have counts for
10 papers
Stochastic thermodynamics of an electron-spin-resonance quantum dot system
JunYan Luo, Yiying Yan, Hailong Wang +3
We present a stochastic thermodynamics analysis of an electron-spin-resonance pumped quantum dot device in the Coulomb-blocked regime, where a pure spin current is generated withou…
Effects of Non-Hermiticity on Su-Schrieffer-Heeger Defect States
Li-Jun Lang, You Wang, Hailong Wang +1
We study the emergence and disappearance of defect states in the complex Su-Schrieffer-Heeger (cSSH) model, a non-Hermitian one-dimensional lattice model containing gain and loss o…
Non-Hermitian dynamics of slowly-varying Hamiltonians
Hailong Wang, Li-Jun Lang, Y. D. Chong
We develop a theoretical description of non-Hermitian time evolution that accounts for the break- down of the adiabatic theorem. We obtain closed-form expressions for the time-depe…
Dynamical quantum phase transitions in non-Hermitian lattices
Longwen Zhou, Qing-hai Wang, Hailong Wang +1
In closed quantum systems, a dynamical phase transition is identified by nonanalytic behaviors of the return probability as a function of time. In this work, we study the nonunitar…
Exceptional Points in a Non-Hermitian Topological Pump
Wenchao Hu, Hailong Wang, Perry Ping Shum +1
We investigate the effects of non-Hermiticity on topological pumping, and uncover a connection between a topological edge invariant based on topological pumping and the winding num…
Floquet Weyl Phases in a Three Dimensional Network Model
Hailong Wang, Longwen Zhou, Yidong Chong
We study the topological properties of 3D Floquet bandstructures, which are defined using unitary evolution matrices rather than Hamiltonians. Previously, 2D bandstructures of this…
Interband Coherence Induced Correction to Adiabatic Pumping in Periodically Driven Systems
Hailong Wang, Longwen Zhou, Jiangbin Gong
Periodic driving can create topological phases of matter absent in static systems. In terms of the displacement of the position expectation value of a time-evolving wavepacket in a…
Aspects of Floquet Bands and Topological Phase Transitions in a Continuously Driven Superlattice
Longwen Zhou, Hailong Wang, Derek Y. H. Ho +1
Recently the creation of novel topological states of matter by a periodic driving field has attracted great attention. To motivate further experimental and theoretical studies, we…
Exponential Quantum Spreading in a Class of Kicked Rotor Systems near High-Order Resonances
Hailong Wang, Jiao Wang, Italo Guarneri +2
Long-lasting quantum exponential spreading was recently found in a simple but very rich dynamical model, namely, an on-resonance double-kicked rotor model [J. Wang, I. Guarneri, G.…
Kicked-Harper model vs On-Resonance Double Kicked Rotor Model: From Spectral Difference to Topological Equivalence
Hailong Wang, Derek Y. H. Ho, Wayne Lawton +2
Recent studies have established that, in addition to the well-known kicked Harper model (KHM), an on-resonance double kicked rotor model (ORDKR) also has Hofstadter's butterfly Flo…