Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.06301 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929380405542912 |
|---|---|
| author | Zhu, Xin Lü, Jia-Hao Ning, Wen Shen, Li-Tuo Wu, Fan Yang, Zhen-Biao |
| author_facet | Zhu, Xin Lü, Jia-Hao Ning, Wen Shen, Li-Tuo Wu, Fan Yang, Zhen-Biao |
| contents | We investigate the quantum phase transition in the anisotropic Dicke model through an examination of the quantum geometric tensor of the ground state. In this analysis, two distinct classical limits exhibit their unique anisotropic characteristics. The classical spin limit demonstrates a preference for the rotating-wave coupling, whereas the classical oscillator limit exhibits symmetry in the coupling strength of the bias. The anisotropic features of the classical spin limit persist at finite scales. Furthermore, we observe that the interplay among the anisotropic ratio, spin length, and frequency ratio can collectively enhance the critical behaviors. This critical enhancement without trade-off between these factors provides a flexible method for quantum precision measurement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_06301 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum Geometric Tensor and Critical Metrology in the Anisotropic Dicke Model Zhu, Xin Lü, Jia-Hao Ning, Wen Shen, Li-Tuo Wu, Fan Yang, Zhen-Biao Quantum Physics We investigate the quantum phase transition in the anisotropic Dicke model through an examination of the quantum geometric tensor of the ground state. In this analysis, two distinct classical limits exhibit their unique anisotropic characteristics. The classical spin limit demonstrates a preference for the rotating-wave coupling, whereas the classical oscillator limit exhibits symmetry in the coupling strength of the bias. The anisotropic features of the classical spin limit persist at finite scales. Furthermore, we observe that the interplay among the anisotropic ratio, spin length, and frequency ratio can collectively enhance the critical behaviors. This critical enhancement without trade-off between these factors provides a flexible method for quantum precision measurement. |
| title | Quantum Geometric Tensor and Critical Metrology in the Anisotropic Dicke Model |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2406.06301 |