Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder
The interacting Bose–Hubbard flux ladder provides an ideal model to probe novel quantum phenomena of many-body systems. Here, we report on the first direct observation of dynamical quantum phase transition (DQPT) in interacting Bose–Hubbard flux ladder induced by defect perturbation, which provides...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/accec3 |
| _version_ | 1827871309479018496 |
|---|---|
| author | Yue Jian Ai-Xia Zhang Xin Qiao Jun-Cheng Liang Zi-Fa Yu Ju-Kui Xue |
| author_facet | Yue Jian Ai-Xia Zhang Xin Qiao Jun-Cheng Liang Zi-Fa Yu Ju-Kui Xue |
| author_sort | Yue Jian |
| collection | DOAJ |
| description | The interacting Bose–Hubbard flux ladder provides an ideal model to probe novel quantum phenomena of many-body systems. Here, we report on the first direct observation of dynamical quantum phase transition (DQPT) in interacting Bose–Hubbard flux ladder induced by defect perturbation, which provides a new scheme for experimental design and manipulation of the DQPT in ultracold atomic system. Under the mean-field approximation, DQPT is identified by resolving the order parameter and the temporal evolution of patterns of atomic density distributions and local current configurations of the system. The threshold for occurrence of DQPT is obtained analytical and the physical mechanism of DQPT is revealed explicitly. Periodic appearance and annihilation of dynamical vortex and the manifestation of symmetry restoration after perturbation from broken-symmetry phase are observed. A thorough connection among the order parameter dynamics, the underlying ground state phase transition and nonequilibrium dynamics is established in real time and real space for the first time. Interestingly, by quenching the defect, the underlying ground state phases are captured, which provides a feasible dynamical measurement scheme for the observation of the underlying ground state phase which is challenging to reach experimentally. |
| first_indexed | 2024-03-12T16:08:32Z |
| format | Article |
| id | doaj.art-747160cbe22f415eb7f1312f5f342efd |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:08:32Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-747160cbe22f415eb7f1312f5f342efd2023-08-09T14:14:51ZengIOP PublishingNew Journal of Physics1367-26302023-01-0125404302510.1088/1367-2630/accec3Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladderYue Jian0Ai-Xia Zhang1Xin Qiao2Jun-Cheng Liang3Zi-Fa Yu4https://orcid.org/0000-0001-5012-0148Ju-Kui Xue5https://orcid.org/0000-0001-7854-5869College of Physics and Electronic Engineering, Northwest Normal University , Lanzhou 730070, People’s Republic of China; Department of Basic Sciences, Lanzhou Institute of Technology , Lanzhou 730050, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Northwest Normal University , Lanzhou 730070, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Northwest Normal University , Lanzhou 730070, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Northwest Normal University , Lanzhou 730070, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Northwest Normal University , Lanzhou 730070, People’s Republic of ChinaCollege of Physics and Electronic Engineering, Northwest Normal University , Lanzhou 730070, People’s Republic of ChinaThe interacting Bose–Hubbard flux ladder provides an ideal model to probe novel quantum phenomena of many-body systems. Here, we report on the first direct observation of dynamical quantum phase transition (DQPT) in interacting Bose–Hubbard flux ladder induced by defect perturbation, which provides a new scheme for experimental design and manipulation of the DQPT in ultracold atomic system. Under the mean-field approximation, DQPT is identified by resolving the order parameter and the temporal evolution of patterns of atomic density distributions and local current configurations of the system. The threshold for occurrence of DQPT is obtained analytical and the physical mechanism of DQPT is revealed explicitly. Periodic appearance and annihilation of dynamical vortex and the manifestation of symmetry restoration after perturbation from broken-symmetry phase are observed. A thorough connection among the order parameter dynamics, the underlying ground state phase transition and nonequilibrium dynamics is established in real time and real space for the first time. Interestingly, by quenching the defect, the underlying ground state phases are captured, which provides a feasible dynamical measurement scheme for the observation of the underlying ground state phase which is challenging to reach experimentally.https://doi.org/10.1088/1367-2630/accec3nonequilibrium quantum dynamicsinteracting Bose–Hubbard flux laddersdynamical quantum phase transition |
| spellingShingle | Yue Jian Ai-Xia Zhang Xin Qiao Jun-Cheng Liang Zi-Fa Yu Ju-Kui Xue Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder New Journal of Physics nonequilibrium quantum dynamics interacting Bose–Hubbard flux ladders dynamical quantum phase transition |
| title | Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder |
| title_full | Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder |
| title_fullStr | Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder |
| title_full_unstemmed | Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder |
| title_short | Defect induced nonequilibrium quantum dynamics in an interacting Bose–Hubbard flux ladder |
| title_sort | defect induced nonequilibrium quantum dynamics in an interacting bose hubbard flux ladder |
| topic | nonequilibrium quantum dynamics interacting Bose–Hubbard flux ladders dynamical quantum phase transition |
| url | https://doi.org/10.1088/1367-2630/accec3 |
| work_keys_str_mv | AT yuejian defectinducednonequilibriumquantumdynamicsinaninteractingbosehubbardfluxladder AT aixiazhang defectinducednonequilibriumquantumdynamicsinaninteractingbosehubbardfluxladder AT xinqiao defectinducednonequilibriumquantumdynamicsinaninteractingbosehubbardfluxladder AT junchengliang defectinducednonequilibriumquantumdynamicsinaninteractingbosehubbardfluxladder AT zifayu defectinducednonequilibriumquantumdynamicsinaninteractingbosehubbardfluxladder AT jukuixue defectinducednonequilibriumquantumdynamicsinaninteractingbosehubbardfluxladder |