大都会规模的离子-光子纠通过一个量子网络节点与混合复杂增强增强
1Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, China.
Nature communications
|December 6, 2025
概括
研究人员开发了一种使用40Ca+离子的复合量子网络节点. 该系统实现了高预告的离子-光子纠率,这对于推进量子网络和量子重复器至关重要.
科学领域:
- 量子信息科学 量子信息科学
- 原子,分子和光学物理学
背景情况:
- 量子网络和量子重复器对于扩展量子信息系统至关重要.
- 高速的预示远程纠分布是必要的,以克服量子节点中的不连贯性.
研究的目的:
- 实验实现一个多重复的量子网络节点,以提高纠分布率.
- 研究多重复合在量子网络中加速预告纠生成的潜力.
主要方法:
- 利用40Ca+离子链作为量子网络节点的基础.
- 实施了一种混合复杂化方案,产生多达44个时间区模式.
- 采用双类型框架来保护量子信息在纠尝试期间.
主要成果:
- 在12公里的光纤上实现了4.28s^-1的预告的离子光子纠成功率.
- 证明了366ms的内存连贯时间,超过了纠生成时间.
- 通过复杂增强成功提高了纠率.
结论:
- 开发的复杂量子网络节点显著提高了预告的纠分布率.
- 实验结果证明了多重复合对于实际量子网络应用的可行性.
- 实现的连贯时间表明在以离子为基础的节点内具有强大的量子信息存储.
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