Coherent control of nonlinear mode transitions in Bose-Einstein condensates

Autor(es)

da Silva, Leonardo Brito ^[1] ; de Lima, Emanuel Fernandes ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Fed Sao Carlos UFSCar, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 53, n. 12 JUN 28 2020.
• Citações Web of Science: 0

Resumo

In the present work, we consider the generation of excited nonlinear topological modes of Bose-Einstein condensates. These nonlinear modes present a number of interesting properties and can be used in many applications, such as in matter-wave optics experiments. The resonant generation of nonlinear modes by modulating either the trapping potential or the scattering length have been previously reported. Here, we propose the simultaneous use of both modulations with an adjustable relative phase between them in order to coherently control the transition from the ground state to an excited mode. Within the framework of the Gross-Pitaevskii equation (GPE), we show that the transition probability and the transition duration can be controlled by means of the manipulation of the relative phase. In particular, the acceleration of the transition can be useful to avoid dissipative effects of the condensate with its surroundings. In our analysis, we employ approximate analytical techniques, including a perturbative treatment, and numerical calculations for the GPE. (AU)

• Processo FAPESP: 14/23648-9 - Controle quântico da matéria ultrafria
• Beneficiário: Emanuel Fernandes de Lima
• Modalidade de apoio: Auxílio à Pesquisa - Regular