Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers
We consider possibilities to grasp and drag one-dimensional solitons in two-component Bose–Einstein condensates (BECs), under the action of gravity, by tweezers induced by spatially confined spin–orbit (SO) coupling applied to the BEC, with the help of focused laser illumination. Solitons of two typ...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ab7cb1 |
| _version_ | 1827872908262768640 |
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| author | Bin Liu Rongxuan Zhong Zhaopin Chen Xizhou Qin Honghua Zhong Yongyao Li Boris A Malomed |
| author_facet | Bin Liu Rongxuan Zhong Zhaopin Chen Xizhou Qin Honghua Zhong Yongyao Li Boris A Malomed |
| author_sort | Bin Liu |
| collection | DOAJ |
| description | We consider possibilities to grasp and drag one-dimensional solitons in two-component Bose–Einstein condensates (BECs), under the action of gravity, by tweezers induced by spatially confined spin–orbit (SO) coupling applied to the BEC, with the help of focused laser illumination. Solitons of two types are considered, semi-dipoles and mixed modes. We find critical values of the gravity force, up to which the solitons may be held or transferred by the tweezers. The dependence of the critical force on the magnitude and spatial extension of the localized SO interaction, as well as on the soliton’s norm and speed (in the transfer regime), are systematically studied by means of numerical methods, and analytically with the help of a quasi-particle approximation for the soliton. In particular, a noteworthy finding is that the critical gravity force increases with the increase of the transfer speed (i.e., moving solitons are more robust than quiescent ones). Nonstationary regimes are addressed too, by considering abrupt application of gravity to solitons created in the weightless setting. In that case, solitons feature damped shuttle motion, provided that the gravity force does not exceed a dynamical critical value, which is smaller than its static counterpart. The results may help to design gravimeters based on ultracold atoms. |
| first_indexed | 2024-03-12T16:30:10Z |
| format | Article |
| id | doaj.art-164cae1fc5f047d08444ec2439077dbd |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:30:10Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-164cae1fc5f047d08444ec2439077dbd2023-08-08T15:29:54ZengIOP PublishingNew Journal of Physics1367-26302020-01-0122404300410.1088/1367-2630/ab7cb1Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezersBin Liu0Rongxuan Zhong1Zhaopin Chen2Xizhou Qin3Honghua Zhong4Yongyao Li5Boris A Malomed6School of Physics and Optoelectronic Engineering, Foshan University , Foshan 528000, People’s Republic of ChinaSchool of Physics and Optoelectronic Engineering, Foshan University , Foshan 528000, People’s Republic of ChinaDepartment of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University , P.O.B. 39040, Tel Aviv, IsraelSchool of Physics and Optoelectronic Engineering, Foshan University , Foshan 528000, People’s Republic of ChinaInstitute of Mathematics and Physics, Central South University of Forestry and Technology , Changsha 410004, People’s Republic of ChinaSchool of Physics and Optoelectronic Engineering, Foshan University , Foshan 528000, People’s Republic of China; Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University , P.O.B. 39040, Tel Aviv, IsraelSchool of Physics and Optoelectronic Engineering, Foshan University , Foshan 528000, People’s Republic of China; Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University , P.O.B. 39040, Tel Aviv, IsraelWe consider possibilities to grasp and drag one-dimensional solitons in two-component Bose–Einstein condensates (BECs), under the action of gravity, by tweezers induced by spatially confined spin–orbit (SO) coupling applied to the BEC, with the help of focused laser illumination. Solitons of two types are considered, semi-dipoles and mixed modes. We find critical values of the gravity force, up to which the solitons may be held or transferred by the tweezers. The dependence of the critical force on the magnitude and spatial extension of the localized SO interaction, as well as on the soliton’s norm and speed (in the transfer regime), are systematically studied by means of numerical methods, and analytically with the help of a quasi-particle approximation for the soliton. In particular, a noteworthy finding is that the critical gravity force increases with the increase of the transfer speed (i.e., moving solitons are more robust than quiescent ones). Nonstationary regimes are addressed too, by considering abrupt application of gravity to solitons created in the weightless setting. In that case, solitons feature damped shuttle motion, provided that the gravity force does not exceed a dynamical critical value, which is smaller than its static counterpart. The results may help to design gravimeters based on ultracold atoms.https://doi.org/10.1088/1367-2630/ab7cb1Gross–Pitaevskii equationdynamicsmatter-wave solitonsspin–orbit-coupling |
| spellingShingle | Bin Liu Rongxuan Zhong Zhaopin Chen Xizhou Qin Honghua Zhong Yongyao Li Boris A Malomed Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers New Journal of Physics Gross–Pitaevskii equation dynamics matter-wave solitons spin–orbit-coupling |
| title | Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers |
| title_full | Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers |
| title_fullStr | Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers |
| title_full_unstemmed | Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers |
| title_short | Holding and transferring matter-wave solitons against gravity by spin–orbit-coupling tweezers |
| title_sort | holding and transferring matter wave solitons against gravity by spin orbit coupling tweezers |
| topic | Gross–Pitaevskii equation dynamics matter-wave solitons spin–orbit-coupling |
| url | https://doi.org/10.1088/1367-2630/ab7cb1 |
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