Hybrid Optomechanical Cooling with Kerr Magnons and Squeezed Vacuum
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918124411944960 |
|---|---|
| author | Fan, Xiao-Hong Chen, Qin-Geng Chen, Jiaojiao Xiong, Wei |
| author_facet | Fan, Xiao-Hong Chen, Qin-Geng Chen, Jiaojiao Xiong, Wei |
| contents | Ground-state cooling is essential for accessing the quantum regime and enabling quantum control of macroscopic systems. However, achieving optomechanical cooling in the unresolved-sideband regime ($ω_b < κ$) remains challenging. In this Letter, we propose an efficient cooling strategy based on a hybrid optomechanical system incorporating a yttrium iron garnet (YIG) sphere embedded in an optomechanical cavity. Under strong cavity driving, the Kerr nonlinearity of the magnons hosted in the YIG sphere gives rise to a two-magnon process. Adiabatic elimination of the magnons yields an effective two-photon process in the cavity, which destructively interferes with all dissipative channels, surpassing the quantum backaction limit and enabling \textit{complete suppression} of heating under optimal conditions, even in the deeply unresolved sideband regime (DUSR: $ω_b \ll κ$). Moreover, injecting squeezed vacuum noise into the cavity not only preserves these advantages but also delivers additional enhancements, including higher net cooling rates, reduced optomechanical coupling requirements, and improved noise robustness. Comparative analysis shows that our approach outperforms existing schemes without Kerr magnons, underscoring the potential of integrating nonlinear magnonics with optomechanics for quantum control of macroscopic mechanical systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_09725 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hybrid Optomechanical Cooling with Kerr Magnons and Squeezed Vacuum Fan, Xiao-Hong Chen, Qin-Geng Chen, Jiaojiao Xiong, Wei Quantum Physics Ground-state cooling is essential for accessing the quantum regime and enabling quantum control of macroscopic systems. However, achieving optomechanical cooling in the unresolved-sideband regime ($ω_b < κ$) remains challenging. In this Letter, we propose an efficient cooling strategy based on a hybrid optomechanical system incorporating a yttrium iron garnet (YIG) sphere embedded in an optomechanical cavity. Under strong cavity driving, the Kerr nonlinearity of the magnons hosted in the YIG sphere gives rise to a two-magnon process. Adiabatic elimination of the magnons yields an effective two-photon process in the cavity, which destructively interferes with all dissipative channels, surpassing the quantum backaction limit and enabling \textit{complete suppression} of heating under optimal conditions, even in the deeply unresolved sideband regime (DUSR: $ω_b \ll κ$). Moreover, injecting squeezed vacuum noise into the cavity not only preserves these advantages but also delivers additional enhancements, including higher net cooling rates, reduced optomechanical coupling requirements, and improved noise robustness. Comparative analysis shows that our approach outperforms existing schemes without Kerr magnons, underscoring the potential of integrating nonlinear magnonics with optomechanics for quantum control of macroscopic mechanical systems. |
| title | Hybrid Optomechanical Cooling with Kerr Magnons and Squeezed Vacuum |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2508.09725 |