Controllable Thouless Pumping Switching Dynamics of Gap Solitons Mediated by Finite Bogoliubov Excitations

2026/06/30 by Tao Jiang, Jie Liu, Li-Chen Zhao · 1 voice
Physics and Astronomy · #nlin.PS #cond-mat.quant-gas #quant-ph

paper · pdf

Abstract

We investigate the Thouless pumping dynamics of nonlinear gap solitons and attempt to realize topological Chern number switching by modulating nonlinear parameters and varying the ramping rate of the relative phase between periodic potentials. We find that gap solitons can undergo nonlinear instabilities accompanied by finite Bogoliubov excitations under near-adiabatic ramping. Such finite Bogoliubov excitations induce the particle loss of the solitons, leading to reversed propagation directions that signals the occurrence of Chern number switching with analyzing the correspondence between soliton chemical potential and Bloch topological energy band. Our findings offer a feasible strategy for manipulating the Thouless pump dynamics of gap solitons mediated by finite Bogoliubov excitations, with implications for topological quantum transport and quantum computing applications.

Citations

• Quantized Thouless Pumping of Dark Solitons
• Quantum theory of fractional topological pumping of lattice solitons
• Nonlinearity-induced Fractional Thouless Pumping of Solitons
• Topological Phase Transitions and Thouless Pumping of Light in Photonic Waveguide Arrays
• Geometrical pumping with a Bose-Einstein condensate
• A Thouless Quantum Pump with Ultracold Bosonic Atoms in an Optical Superlattice
• Topological pumping over a photonic Fibonacci quasicrystal
• Topological States and Adiabatic Pumping in Quasicrystals
• Solitons in nonlinear lattices
• Bose-Einstein condensates in optical lattices: Band-gap structure and solitons
• Quantized Hall Conductance in a Two-Dimensional Periodic Potential
• Structure of a quantized vortex in boson systems

Discussions

• Tao Jiang, Jie Liu, Li-Chen Zhao: Controllable Thouless Pumping Switching Dynamics of Gap Solitons Mediated by Finite Bogoliubov Excitations https://arxiv.org/abs/2606.31006 https://arxiv.org/pdf/2606 [bsky, 0 points, 0 comments]

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