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电信带集成的多模式光子量子内存
Xueying Zhang1, Bin Zhang2, Shihai Wei1
1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
Science advances
|July 14, 2023
概括
研究人员使用激光写入芯片在电信频段开发了一种光纤集成的多模量子内存. 这一突破通过有效地存储更多单个光子,使更高容量的量子网络成为可能.
科学领域:
- 量子信息科学 量子信息科学
- 综合光子学 综合光子学
- 量子通信是一种量子通信.
背景情况:
- 量子网络需要强大的量子内存来存储量子信息.
- 现有的量子内存解决方案往往缺乏与光纤基础设施的整合.
- 在电信频段开发多模量子内存对于可扩展的量子网络至关重要.
研究的目的:
- 为了演示在电信频段运行的光纤集成的多模量子内存.
- 通过先进的光子存储来提高量子网络的容量.
- 克服当前集成光子量子内存技术的局限性.
主要方法:
- 在激光写入芯片上制造纤维尾的Er3+:LiNbO3波导.
- 使用1532 nm的预告单光子进行存储实验.
- 实现全纤维地址与集成和芯片上的组件.
主要成果:
- 在电信频段成功展示了单个光子的多模量子存储.
- 存储容量高达330个时间模式,带宽为4GHz.
- 与单模式运行相比,与巧合检测率相比,实现了167倍的增加.
结论:
- 开发的设备是建立大容量量子网络的重大进步.
- 纤维集成的多模量子内存是未来量子通信基础设施的关键推动因素.
- 这项工作为使用集成光子学实用的量子网络铺平了道路.
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