在量子网络上远程纠的确定性交付
Peter C Humphreys1, Norbert Kalb1, Jaco P J Morits1
1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands.
Nature
|June 15, 2018
概括
研究人员开发了一种用于量子网络的高速纠协议. 这一突破使得确定性远程纠生成成为安全通信和分布式量子计算的关键一步.
科学领域:
- 量子信息科学
- 量子网络
- 量子通信
背景情况:
- 大规模的量子网络需要高节点之间的纠生成率来克服脱凝.
- 目前的双节点量子网络面临着纠分布效率的限制.
- 确定性远程纠对于先进的量子应用是必不可少的.
研究的目的:
- 展示一个可扩展的量子网络的高率,决定性纠协议.
- 超过远程节点的纠生成率.
- 为未来的多节点量子网络建立一个关键的构建块.
主要方法:
- 使用两个米的钻石旋转量子位节点.
- 实现了一个完全预示的单光子纠协议.
- 使用动态脱来抑制纠状态的脱率.
主要成果:
- 实现了高达39赫兹的纠生成率,比以前的方法高出3个数量级.
- 抑制远程纠状态的脱率为5Hz.
- 证明了远程纠状态的决定性传递,每100ms>0.5的保真度.
结论:
- 开发的协议克服了量子网络纠分布的关键局限性.
- 这项工作为构建扩展的多节点量子网络提供了关键组成部分.
- 通过纠分布实现安全通信,分布式量子计算和增强传感.
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