Anomalous Long-Distance Coherence in Critically-Driven Cavity Magnonics
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866917692058894336 |
|---|---|
| author | Yang, Ying Yao, Jiguang Xiao, Yang Fong, Pak-Tik Lau, Hoi-Kwan Hu, C. -M. |
| author_facet | Yang, Ying Yao, Jiguang Xiao, Yang Fong, Pak-Tik Lau, Hoi-Kwan Hu, C. -M. |
| contents | Developing quantum networks necessitates coherently connecting distant systems via remote strong coupling. Here, we demonstrate long-distance coherence in cavity magnonics operating in the linear regime. By locally setting the cavity near critical coupling with travelling photons, non-local magnon-photon coherence is established via strong coupling over a 2-meter distance. We observe two anomalies in this long-distance coherence: first, the coupling strength oscillates twice the period of conventional photon-mediated couplings; second, clear mode splitting is observed within the cavity linewidth. Both effects cannot be explained by conventional coupled-mode theory, which reveal the tip of an iceberg of photon-mediated coupling in systems under critical driving. Our work shows the potential of using critical phenomena for harnessing long-distance coherence in distributed systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_13190 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anomalous Long-Distance Coherence in Critically-Driven Cavity Magnonics Yang, Ying Yao, Jiguang Xiao, Yang Fong, Pak-Tik Lau, Hoi-Kwan Hu, C. -M. Quantum Physics Other Condensed Matter Developing quantum networks necessitates coherently connecting distant systems via remote strong coupling. Here, we demonstrate long-distance coherence in cavity magnonics operating in the linear regime. By locally setting the cavity near critical coupling with travelling photons, non-local magnon-photon coherence is established via strong coupling over a 2-meter distance. We observe two anomalies in this long-distance coherence: first, the coupling strength oscillates twice the period of conventional photon-mediated couplings; second, clear mode splitting is observed within the cavity linewidth. Both effects cannot be explained by conventional coupled-mode theory, which reveal the tip of an iceberg of photon-mediated coupling in systems under critical driving. Our work shows the potential of using critical phenomena for harnessing long-distance coherence in distributed systems. |
| title | Anomalous Long-Distance Coherence in Critically-Driven Cavity Magnonics |
| topic | Quantum Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2404.13190 |