两种模式挤压在部署的光纤上,与传统通信共存
Optics express
|September 15, 2023
概括
研究人员展示了分布式的两种模式的光挤压,即使存在经典信号. 这一突破为先进的量子网络和传感应用铺平了道路,而不需要专门的暗光纤.
科学领域:
- 量子信息科学 量子信息科学
- 量子光学是一种量子光学.
- 量子通信是一种量子通信.
背景情况:
- 压缩光对于连续变量 (CV) 量子信息科学至关重要.
- 分布式多模式挤压是CV量子网络和分布式量子传感的关键.
- 以前的多模式挤压实验仅限于没有经典信号的暗光纤设置.
研究的目的:
- 为了证明与经典信号共存的分布式双模式光挤压.
- 为了证明压缩光不需要专门的暗光纤进行分发.
- 为了实现未来的量子网络和需要分布式多模式挤压的传感应用.
主要方法:
- 压缩模式与经典信号 (局部振荡器,网络信号) 的频率复合.
- 通过单独的纤维卷 (5公里) 和部署的校园纤维 (250米,1.2公里) 分发压缩光.
- 测量两种模式的关节挤压,使用在单独的位置触发的同位素检测.
主要成果:
- 在5公里光纤分布后,实现了0.9±0.1dB的共存双模式挤压.
- 测量 -0.5 ± 0.1 dB 通过校园纤维分布后共存的双模式挤压.
- 成功地证明了压缩模式在分布过程中可以与经典信号共存.
结论:
- 与经典信号一起可以实现分布式多模式挤压,从而消除了对暗光纤的需求.
- 这次演示是朝着量子网络和分布式量子传感的实际实施迈出的重要一步.
- 使用经典信号分配压缩光的能力为量子技术开辟了新的途径.
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