Thouless pumping and trapping of two-component gap solitons

Autor:	Lyu, Hao, Zhang, Yongping, Busch, Thomas
Rok vydání:	2024
Předmět:	Condensed Matter - Quantum Gases Nonlinear Sciences - Pattern Formation and Solitons
Zdroj:	Phys. Rev. Res. 6, L042010 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevResearch.6.L042010
Popis:	We study Thouless pumping and arresting of gap solitons in a two-component Bose gas loaded into an optical superlattice. We show that, depending on the atomic interactions and chemical potentials, the two solitons can be simultaneously pumped or trapped, but we also identify regimes where one soliton is pumped and the other arrested. These behaviors can be understood by considering an effective model of the system based on a variational approach, which reveals that the soliton width is a suitable qualifier for the observed behaviours: solitons with a larger width get transported, while solitons with a smaller width get trapped. Since these width can be controlled by tuning interactions, it should be possible to observe all behaviours experimentally. Comment: 7 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.13823 Zobrazit plný text záznamu View this record from Arxiv