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在大都市量子网络中创建记忆-记忆纠
Jian-Long Liu1,2,3, Xi-Yu Luo1,2,3, Yong Yu1,2,3,4
1Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei, China.
Nature
|May 15, 2024
概括
研究人员在一个大都市量子网络中创建了记忆-记忆纠. 通过在12.5公里之外的三个节点上展示纠, 这一里程碑推动了量子互联网.
科学领域:
- 量子网络
- 量子通信
背景情况:
- 对于未来的量子互联网来说,从基于实验室的双节点量子网络实验转向大规模的多节点系统至关重要.
- 之前的研究重点是原则证明,突出了可扩展网络架构的需求.
研究的目的:
- 在跨越大都市区域的多节点量子网络中建立内存-内存纠.
- 创建一个测试平台来评估和探索多节点量子网络协议.
主要方法:
- 使用了三个独立的原子集合量子内存节点与电信转换功能.
- 使用光子服务器产生纠,预示单光子检测.
- 实现了光纤链路和控制激光器的活性相差稳定.
- 在任何两个内存节点之间同时实现纠生成.
主要成果:
- 在12.5公里大都市距离的多节点量子网络中展示了内存-内存纠.
- 验证了量子内存的寿命超过了往返通信时间.
- 在多个节点对之间成功实现并发纠生成.
结论:
- 这项工作为量子网络研究建立了一个大都市规模的测试平台.
- 这些发现是实现功能量子互联网的重要一步.
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