Spin Polarization Control via Magnetic Field in Dissipative Bosonic Systems
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866915354818641920 |
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| author | Fan, Yaoyuan Shi, Shuoyu Cao, Lang Zhang, Qiuxin Hu, Dong Wang, Yu Zhou, Xiaoji |
| author_facet | Fan, Yaoyuan Shi, Shuoyu Cao, Lang Zhang, Qiuxin Hu, Dong Wang, Yu Zhou, Xiaoji |
| contents | Engineering spin polarization in dissipative bosonic systems is crucial for advancing quantum technologies, especially for applications in quantum metrology and space-based quantum simulations. This work demonstrates precise magnetic moment control in multicomponent Bose gases during evaporative cooling via tailored magnetic fields. By adjusting the magnetic field gradients, null point position, and duration, we selectively tune evaporation rates of magnetic sublevels, achieving targeted spin polarization. Theoretical models, validated by numerical simulations and Stern-Gerlach experiments, reveal how magnetic fields reshape trapping potentials and spin-dependent dissipation. The results establish a dissipative spin-selection mechanism governing polarization evolution in evaporatively cooled Bose gases and provide a framework for engineering spin-polarized quantum states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_17962 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin Polarization Control via Magnetic Field in Dissipative Bosonic Systems Fan, Yaoyuan Shi, Shuoyu Cao, Lang Zhang, Qiuxin Hu, Dong Wang, Yu Zhou, Xiaoji Quantum Gases Atomic Physics Engineering spin polarization in dissipative bosonic systems is crucial for advancing quantum technologies, especially for applications in quantum metrology and space-based quantum simulations. This work demonstrates precise magnetic moment control in multicomponent Bose gases during evaporative cooling via tailored magnetic fields. By adjusting the magnetic field gradients, null point position, and duration, we selectively tune evaporation rates of magnetic sublevels, achieving targeted spin polarization. Theoretical models, validated by numerical simulations and Stern-Gerlach experiments, reveal how magnetic fields reshape trapping potentials and spin-dependent dissipation. The results establish a dissipative spin-selection mechanism governing polarization evolution in evaporatively cooled Bose gases and provide a framework for engineering spin-polarized quantum states. |
| title | Spin Polarization Control via Magnetic Field in Dissipative Bosonic Systems |
| topic | Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2506.17962 |