Cross-symmetric dipolar-matter-wave solitons in double-well chains

Zhiwei Fan, Yuhan Shi, Yan Liu, Wei Pang, Yongyao Li, Boris A. Malomed

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We consider a dipolar Bose-Einstein condensate trapped in an array of two-well systems with an arbitrary orientation of the dipoles relative to the system's axis. The system can be built as a chain of local traps sliced into two parallel lattices by a repelling laser sheet. It is modeled by a pair of coupled discrete Gross-Pitaevskii equations, with dipole-dipole self-interactions and cross interactions. When the dipoles are not polarized perpendicular or parallel to the lattice, the cross interaction is asymmetric, replacing the familiar symmetric two-component discrete solitons by two new species of cross-symmetric ones, viz., on-site- and off-site-centered solitons, which are strongly affected by the orientation of the dipoles and separation between the parallel lattices. A very narrow region of intermediate asymmetric discrete solitons is found at the boundary between the on- and off-site families. Two different types of solitons in the PT-symmetric version of the system are constructed too, and stability areas are identified for them.

Original languageEnglish
Article number032226
JournalPhysical Review E
Volume95
Issue number3
DOIs
StatePublished - 31 Mar 2017

Funding

FundersFunder number
Department of Applied Physics
Special Funds for the Cultivation of Guangdong2015616, pdjh2017b0087
US-Israel
National Natural Science Foundation of China11204089, 11575063, 61575041
Natural Science Foundation of Jiangsu Province
Wuhan Institute of Technology
South China Agricultural University

    Fingerprint

    Dive into the research topics of 'Cross-symmetric dipolar-matter-wave solitons in double-well chains'. Together they form a unique fingerprint.

    Cite this