大都市尺度预示着固态量子比特的纠缠。

IF 11.7 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Science Advances Pub Date : 2024-10-30 DOI:10.1126/sciadv.adp6442
Arian J. Stolk, Kian L. van der Enden, Marie-Christine Slater, Ingmar te Raa-Derckx, Pieter Botma, Joris van Rantwijk, J. J. Benjamin Biemond, Ronald A. J. Hagen, Rodolf W. Herfst, Wouter D. Koek, Adrianus J. H. Meskers, René Vollmer, Erwin J. van Zwet, Matthew Markham, Andrew M. Edmonds, J. Fabian Geus, Florian Elsen, Bernd Jungbluth, Constantin Haefner, Christoph Tresp, Jürgen Stuhler, Stephan Ritter, Ronald Hanson
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引用次数: 0

摘要

未来量子互联网技术面临的一个关键挑战是连接大都市规模的量子处理器。在这里,我们报告了两个独立运行的量子网络节点之间的预示纠缠,这两个节点相距 10 公里。这两个承载金刚石自旋量子比特的节点通过 25 千米长的光纤与中点站相连。我们通过将量子比特本征光子量子频率转换到电信 L 波段,并将链路嵌入可扩展的相位稳定架构,从而使用抗损耗的单击纠缠协议,将光纤光子损耗的影响降至最低。通过利用网络链路的全部预示能力,并结合长寿命量子比特的实时反馈逻辑,我们展示了在节点上传输预定义纠缠状态而不受预示检测模式的影响。我们的架构解决了关键的扩展难题,并兼容不同的量子比特系统,为探索大都市规模的量子网络建立了一个通用平台。
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Metropolitan-scale heralded entanglement of solid-state qubits
A key challenge toward future quantum internet technology is connecting quantum processors at metropolitan scale. Here, we report on heralded entanglement between two independently operated quantum network nodes separated by 10 kilometers. The two nodes hosting diamond spin qubits are linked with a midpoint station via 25 kilometers of deployed optical fiber. We minimize the effects of fiber photon loss by quantum frequency conversion of the qubit-native photons to the telecom L-band and by embedding the link in an extensible phase-stabilized architecture enabling the use of the loss-resilient single-click entangling protocol. By capitalizing on the full heralding capabilities of the network link in combination with real-time feedback logic on the long-lived qubits, we demonstrate the delivery of a predefined entangled state on the nodes irrespective of the heralding detection pattern. Addressing key scaling challenges and being compatible with different qubit systems, our architecture establishes a generic platform for exploring metropolitan-scale quantum networks.
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来源期刊
Science Advances
Science Advances 综合性期刊-综合性期刊
CiteScore
21.40
自引率
1.50%
发文量
1937
审稿时长
29 weeks
期刊介绍: Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.
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