Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates
We investigate dynamics of 2D chiral solitons of semivortex (SV) and mixed-mode (MM) types in spin-orbit-coupled Bose-Einstein condensates with the Manakov nonlinearity, loaded in a dual-core (double-layer) trap. The system supports two novel manifestations of Josephson phenomenology: one in the for...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033214 |
| _version_ | 1797211321297534976 |
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| author | Zhaopin Chen Yongyao Li Boris A. Malomed |
| author_facet | Zhaopin Chen Yongyao Li Boris A. Malomed |
| author_sort | Zhaopin Chen |
| collection | DOAJ |
| description | We investigate dynamics of 2D chiral solitons of semivortex (SV) and mixed-mode (MM) types in spin-orbit-coupled Bose-Einstein condensates with the Manakov nonlinearity, loaded in a dual-core (double-layer) trap. The system supports two novel manifestations of Josephson phenomenology: one in the form of persistent oscillations between SVs or MMs with opposite chiralities in the two cores, and another one demonstrating robust periodic switching (identity oscillations) between SV in one core and MM in the other, provided that the strength of the intercore coupling exceeds a threshold value. Below the threshold, the system either creates composite states, which are asymmetric with respect to the two cores, or collapses. Robustness of the chirality and identity oscillations against deviations from the Manakov nonlinearity is investigated too. These dynamical regimes are possible only in the nonlinear system. In the linear one, exact stationary and dynamical solutions for SVs and MMs of the Bessel type are found. They sustain Josephson self-oscillations in different modes, with no interconversion between them. |
| first_indexed | 2024-04-24T10:24:38Z |
| format | Article |
| id | doaj.art-3624220a62734d118f1cf4aa299c301e |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:24:38Z |
| publishDate | 2020-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-3624220a62734d118f1cf4aa299c301e2024-04-12T16:58:30ZengAmerican Physical SocietyPhysical Review Research2643-15642020-08-012303321410.1103/PhysRevResearch.2.033214Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensatesZhaopin ChenYongyao LiBoris A. MalomedWe investigate dynamics of 2D chiral solitons of semivortex (SV) and mixed-mode (MM) types in spin-orbit-coupled Bose-Einstein condensates with the Manakov nonlinearity, loaded in a dual-core (double-layer) trap. The system supports two novel manifestations of Josephson phenomenology: one in the form of persistent oscillations between SVs or MMs with opposite chiralities in the two cores, and another one demonstrating robust periodic switching (identity oscillations) between SV in one core and MM in the other, provided that the strength of the intercore coupling exceeds a threshold value. Below the threshold, the system either creates composite states, which are asymmetric with respect to the two cores, or collapses. Robustness of the chirality and identity oscillations against deviations from the Manakov nonlinearity is investigated too. These dynamical regimes are possible only in the nonlinear system. In the linear one, exact stationary and dynamical solutions for SVs and MMs of the Bessel type are found. They sustain Josephson self-oscillations in different modes, with no interconversion between them.http://doi.org/10.1103/PhysRevResearch.2.033214 |
| spellingShingle | Zhaopin Chen Yongyao Li Boris A. Malomed Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates Physical Review Research |
| title | Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates |
| title_full | Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates |
| title_fullStr | Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates |
| title_full_unstemmed | Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates |
| title_short | Josephson oscillations of chirality and identity in two-dimensional solitons in spin-orbit-coupled condensates |
| title_sort | josephson oscillations of chirality and identity in two dimensional solitons in spin orbit coupled condensates |
| url | http://doi.org/10.1103/PhysRevResearch.2.033214 |
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