期刊
NATURE COMMUNICATIONS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms6480
关键词
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资金
- UK's Engineering and Physical Sciences Research Council, ERC grant [247462 QUOWSS]
- EU [600838 QWAD]
- National Research Foundation
- Leverhulme Trust
- HIPERCOM [2011-CHRI-006]
- Ville de Paris Emergences program, project CiQWii
- Ministry of Education, Singapore
- EPSRC [EP/L024020/1, EP/F002424/1, EP/F003560/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F002424/1, EP/F003560/1, EP/L024020/1] Funding Source: researchfish
Quantum communication and computing offer many new opportunities for information processing in a connected world. Networks using quantum resources with tailor-made entanglement structures have been proposed for a variety of tasks, including distributing, sharing and processing information. Recently, a class of states known as graph states has emerged, providing versatile quantum resources for such networking tasks. Here we report an experimental demonstration of graph state-based quantum secret sharing-an important primitive for a quantum network with applications ranging from secure money transfer to multiparty quantum computation. We use an all-optical setup, encoding quantum information into photons representing a five-qubit graph state. We find that one can reliably encode, distribute and share quantum information amongst four parties, with various access structures based on the complex connectivity of the graph. Our results show that graph states are a promising approach for realising sophisticated multi-layered communication protocols in quantum networks.
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