Quenching dynamics of the bright solitons and other localized states in spin-orbit coupled Bose-Einstein condensates

Year: 2020

Authors: Ravisankar R., Sriraman T., Salasnich L., Muruganandam P.

Autors Affiliation: Bharathidasan Univ, Dept Phys, Tiruchirappalli 620024, Tamil Nadu, India; Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Via Marzolo 8, I-35131 Padua, Italy; CNR, Ist Nazl Ott INO, Via Nello Carrara 1, I-50019 Sesto Fiorentino, Italy; Bharathidasan Univ, Dept Med Phys, Tiruchirappalli 620024, Tamil Nadu, India.

Abstract: We study the dynamics of binary Bose-Einstein condensates made of ultracold and dilute alkali-metal atoms in a quasi-one-dimensional setting. Numerically solving the two coupled Gross-Pitaevskii equations which accurately describe the system dynamics, we demonstrate that the spin transport can be controlled by suitably quenching spin-orbit and Rabi coupling strengths. Moreover, we predict a variety of dynamical features induced by quenching: broken oscillations, breathers-like oscillating patterns, spin-mixing-demixing, miscible-immiscible transition, emerging dark-bright states, dark solitons, and spin-trapping dynamics. We also outline the experimental relevance of the present study in manipulating the spin states in(39)K condensates.

Journal/Review: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS

Volume: 53 (19)      Pages from: 195301-1  to: 195301-15

More Information: RR acknowledges the University Grants Commission (UGC), India for financial support in the form of UGC-BSR-RFSMS Research Fellowship. TS acknowledges financial support by Council of Scientific and Industrial Research (CSIR), India under Grant No. 03(1422)/18/EMR-II. The work of PM forms parts of sponsored research projects by Council of Scientific and Industrial Research (CSIR), India under Grant No. 03(1422)/18/EMR-II, and Science and Engineering Research Board (SERB), India under Grant No. CRG/2019/004059. LS acknowledges partial support from the DOR-BIRD 2019 Project ´Struttura della Materia´ of the University of Padova.
KeyWords: Bose-Einstein condensates; spin-orbit coupling; quenching dynamics; spin mixing-demixing; solitons
DOI: 10.1088/1361-6455/aba661

Citations: 9
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