Bi-Josephson effect in a driven-dissipative supersolid
The Josephson effect is a macroscopic quantum tunneling phenomenon in a system with superfluid property, when it is split into two parts by a barrier. Here, we examine the Josephson effect in a driven-dissipative supersolid realized by coupling Bose–Einstein condensates to an optical ring cavity. We...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/adaa0f |
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| author | Jieli Qin Shijie Li Yijia Tu Maokun Gu Lin Guan Weimin Xu Lu Zhou |
| author_facet | Jieli Qin Shijie Li Yijia Tu Maokun Gu Lin Guan Weimin Xu Lu Zhou |
| author_sort | Jieli Qin |
| collection | DOAJ |
| description | The Josephson effect is a macroscopic quantum tunneling phenomenon in a system with superfluid property, when it is split into two parts by a barrier. Here, we examine the Josephson effect in a driven-dissipative supersolid realized by coupling Bose–Einstein condensates to an optical ring cavity. We show that the spontaneous breaking of spatial translation symmetry in supersolid makes the location of the splitting barrier have a significant influence on the Josephson effect. Remarkably, for the same splitting barrier, depending on its location, two different types of DC Josephson currents are found in the supersolid phase (compared to only one type found in the superfluid phase). Thus, we term it a bi-Josephson effect. We examine the Josephson relationships and critical Josephson currents in detail, revealing that the emergence of supersolid order affects these two types of DC Josephson currents differently—one is enhanced, while the other is suppressed. The findings of this work unveil unique Josephson physics in the supersolid phase, and show new opportunities to build novel Josephson devices with supersolids. |
| format | Article |
| id | doaj-art-5e4ca51188b04cbea5e385866a9ee65f |
| institution | Kabale University |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-5e4ca51188b04cbea5e385866a9ee65f2025-01-23T07:18:02ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127101301510.1088/1367-2630/adaa0fBi-Josephson effect in a driven-dissipative supersolidJieli Qin0https://orcid.org/0000-0003-4112-2875Shijie Li1Yijia Tu2Maokun Gu3Lin Guan4Weimin Xu5Lu Zhou6School of Physics and Materials Science, Guangzhou University , 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, People’s Republic of ChinaSchool of Physics and Materials Science, Guangzhou University , 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, People’s Republic of ChinaSchool of Physics and Materials Science, Guangzhou University , 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, People’s Republic of ChinaSchool of Physics and Materials Science, Guangzhou University , 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, People’s Republic of ChinaSchool of Mathematics and Information Science, Guangzhou University , 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, People’s Republic of ChinaSchool of Mathematics and Information Science, Guangzhou University , 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, People’s Republic of ChinaDepartment of Physics, School of Physics and Electronic Science, East China Normal University , Shanghai 200241, People’s Republic of China; Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan, Shanxi 030006, People’s Republic of ChinaThe Josephson effect is a macroscopic quantum tunneling phenomenon in a system with superfluid property, when it is split into two parts by a barrier. Here, we examine the Josephson effect in a driven-dissipative supersolid realized by coupling Bose–Einstein condensates to an optical ring cavity. We show that the spontaneous breaking of spatial translation symmetry in supersolid makes the location of the splitting barrier have a significant influence on the Josephson effect. Remarkably, for the same splitting barrier, depending on its location, two different types of DC Josephson currents are found in the supersolid phase (compared to only one type found in the superfluid phase). Thus, we term it a bi-Josephson effect. We examine the Josephson relationships and critical Josephson currents in detail, revealing that the emergence of supersolid order affects these two types of DC Josephson currents differently—one is enhanced, while the other is suppressed. The findings of this work unveil unique Josephson physics in the supersolid phase, and show new opportunities to build novel Josephson devices with supersolids.https://doi.org/10.1088/1367-2630/adaa0fJosephson effectsupersolidBose–Einstein condensateoptical ring cavity |
| spellingShingle | Jieli Qin Shijie Li Yijia Tu Maokun Gu Lin Guan Weimin Xu Lu Zhou Bi-Josephson effect in a driven-dissipative supersolid New Journal of Physics Josephson effect supersolid Bose–Einstein condensate optical ring cavity |
| title | Bi-Josephson effect in a driven-dissipative supersolid |
| title_full | Bi-Josephson effect in a driven-dissipative supersolid |
| title_fullStr | Bi-Josephson effect in a driven-dissipative supersolid |
| title_full_unstemmed | Bi-Josephson effect in a driven-dissipative supersolid |
| title_short | Bi-Josephson effect in a driven-dissipative supersolid |
| title_sort | bi josephson effect in a driven dissipative supersolid |
| topic | Josephson effect supersolid Bose–Einstein condensate optical ring cavity |
| url | https://doi.org/10.1088/1367-2630/adaa0f |
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