Reversible optical isolators and quasi-circulators using a magneto-optical Fabry-Pérot cavity
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929315668557824 |
|---|---|
| author | Zhang, Tiantian Zhou, Wenpeng Li, Zhixiang Tang, Yutao Xu, Fan Wu, Haodong Zhang, Han Tang, Jiang-Shan Ruan, Ya-Ping Xia, Keyu |
| author_facet | Zhang, Tiantian Zhou, Wenpeng Li, Zhixiang Tang, Yutao Xu, Fan Wu, Haodong Zhang, Han Tang, Jiang-Shan Ruan, Ya-Ping Xia, Keyu |
| contents | Nonreciprocal optical devices are essential for laser protection, modern optical communication and quantum information processing by enforcing one-way light propagation. The conventional Faraday magneto-optical nonreciprocal devices rely on a strong magnetic field, which is provided by a permanent magnet. As a result, the isolation direction of such devices is fixed and severely restricts their applications in quantum networks.In this work, we experimentally demonstrate the simultaneous one-way transmission and unidirectional reflection by using a magneto-optical Fabry-Pérot cavity and a magnetic field strength of $50~\milli\tesla$. An optical isolator and a three-port quasi-circulator are realized based on this nonreciprocal cavity system. The isolator achieves an isolation ratio of up to $22~\deci\bel$ and an averaged insertion loss down to $0.97~\deci\bel$. The quasi-circulator is realized with a fidelity exceeding $99\%$ and an overall survival probability of $89.9\%$, corresponding to an insertion loss of $\sim 0.46~\deci\bel$. The magnetic field is provided by an electromagnetic coil, thereby allowing for reversing the light circulating path. The reversible quasi-circulator paves the way for building reconfigurable quantum networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_10470 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Reversible optical isolators and quasi-circulators using a magneto-optical Fabry-Pérot cavity Zhang, Tiantian Zhou, Wenpeng Li, Zhixiang Tang, Yutao Xu, Fan Wu, Haodong Zhang, Han Tang, Jiang-Shan Ruan, Ya-Ping Xia, Keyu Optics Nonreciprocal optical devices are essential for laser protection, modern optical communication and quantum information processing by enforcing one-way light propagation. The conventional Faraday magneto-optical nonreciprocal devices rely on a strong magnetic field, which is provided by a permanent magnet. As a result, the isolation direction of such devices is fixed and severely restricts their applications in quantum networks.In this work, we experimentally demonstrate the simultaneous one-way transmission and unidirectional reflection by using a magneto-optical Fabry-Pérot cavity and a magnetic field strength of $50~\milli\tesla$. An optical isolator and a three-port quasi-circulator are realized based on this nonreciprocal cavity system. The isolator achieves an isolation ratio of up to $22~\deci\bel$ and an averaged insertion loss down to $0.97~\deci\bel$. The quasi-circulator is realized with a fidelity exceeding $99\%$ and an overall survival probability of $89.9\%$, corresponding to an insertion loss of $\sim 0.46~\deci\bel$. The magnetic field is provided by an electromagnetic coil, thereby allowing for reversing the light circulating path. The reversible quasi-circulator paves the way for building reconfigurable quantum networks. |
| title | Reversible optical isolators and quasi-circulators using a magneto-optical Fabry-Pérot cavity |
| topic | Optics |
| url | https://arxiv.org/abs/2404.10470 |