One-dimensional quantum droplets under space-periodic nonlinear management
Quantum droplets have recently emerged as a novel liquid state of matter in a mixture of two-component ultracold Bose gases under the equilibrium condition between the competing attractive inter- and repulsive intraspecies forces. Quantum droplets represent a self-bound liquid state in purely nonlin...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-02-01
|
| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379720321902 |
| _version_ | 1818957796966662144 |
|---|---|
| author | Junbo Chen Jianhua Zeng |
| author_facet | Junbo Chen Jianhua Zeng |
| author_sort | Junbo Chen |
| collection | DOAJ |
| description | Quantum droplets have recently emerged as a novel liquid state of matter in a mixture of two-component ultracold Bose gases under the equilibrium condition between the competing attractive inter- and repulsive intraspecies forces. Quantum droplets represent a self-bound liquid state in purely nonlinear systems and as such there is not any management applied to their study up to now. We here introduce the nonlinear management via space-periodic Feshbach resonance technique to a binary Bose–Einstein condensate and investigate theoretically the structure, property and dynamics of the one-dimensional quantum droplets therein, three findings are made: small droplets with single hump (solitonlike), moderate droplets composed of two solitons, large droplets feature a modulated flat-top shape. Particularly, by means of linear-stability and direct perturbed simulations, we prove that the droplets have a much wider stable region than their counterparts without taking the nonlinear management. The variational approximation is adopted and validated with numerical results in terms of small droplets. The results predicted here may be realized in the frontier ultracold atoms experiments aided by Feshbach-resonance, opening up a new channel to the quantum droplets studies. |
| first_indexed | 2024-12-20T11:15:33Z |
| format | Article |
| id | doaj.art-ed0118fab0b44fd1ad7e88f83e969116 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-20T11:15:33Z |
| publishDate | 2021-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-ed0118fab0b44fd1ad7e88f83e9691162022-12-21T19:42:38ZengElsevierResults in Physics2211-37972021-02-0121103781One-dimensional quantum droplets under space-periodic nonlinear managementJunbo Chen0Jianhua Zeng1State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an 710119, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an 710119, China; University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author at: State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an 710119, China.Quantum droplets have recently emerged as a novel liquid state of matter in a mixture of two-component ultracold Bose gases under the equilibrium condition between the competing attractive inter- and repulsive intraspecies forces. Quantum droplets represent a self-bound liquid state in purely nonlinear systems and as such there is not any management applied to their study up to now. We here introduce the nonlinear management via space-periodic Feshbach resonance technique to a binary Bose–Einstein condensate and investigate theoretically the structure, property and dynamics of the one-dimensional quantum droplets therein, three findings are made: small droplets with single hump (solitonlike), moderate droplets composed of two solitons, large droplets feature a modulated flat-top shape. Particularly, by means of linear-stability and direct perturbed simulations, we prove that the droplets have a much wider stable region than their counterparts without taking the nonlinear management. The variational approximation is adopted and validated with numerical results in terms of small droplets. The results predicted here may be realized in the frontier ultracold atoms experiments aided by Feshbach-resonance, opening up a new channel to the quantum droplets studies.http://www.sciencedirect.com/science/article/pii/S2211379720321902Quantum dropletsBose-Einstein condensatesSolitonsFeshbach resonanceNonlinear managementGross-Pitaevskii equation |
| spellingShingle | Junbo Chen Jianhua Zeng One-dimensional quantum droplets under space-periodic nonlinear management Results in Physics Quantum droplets Bose-Einstein condensates Solitons Feshbach resonance Nonlinear management Gross-Pitaevskii equation |
| title | One-dimensional quantum droplets under space-periodic nonlinear management |
| title_full | One-dimensional quantum droplets under space-periodic nonlinear management |
| title_fullStr | One-dimensional quantum droplets under space-periodic nonlinear management |
| title_full_unstemmed | One-dimensional quantum droplets under space-periodic nonlinear management |
| title_short | One-dimensional quantum droplets under space-periodic nonlinear management |
| title_sort | one dimensional quantum droplets under space periodic nonlinear management |
| topic | Quantum droplets Bose-Einstein condensates Solitons Feshbach resonance Nonlinear management Gross-Pitaevskii equation |
| url | http://www.sciencedirect.com/science/article/pii/S2211379720321902 |
| work_keys_str_mv | AT junbochen onedimensionalquantumdropletsunderspaceperiodicnonlinearmanagement AT jianhuazeng onedimensionalquantumdropletsunderspaceperiodicnonlinearmanagement |