Title: Quantum teleportation of shared quantum secret Show Chinese title

Title: 共享量子秘密的量子隐形传态

Abstract: Quantum teleportation allows to transfer unknown quantum states between distant parties. It is not only a primitive of quantum communications but also an essential task in realization of the quantum networks for promising applications such as quantum cryptography and distributed quantum computation. Despite recent substantial progresses in the realization of quantum communications, teleportation of shared quantum information between multiple senders and receivers is still missing. Here we propose and experimentally demonstrate quantum teleportation among spatially separate parties in a quantum network. The protocol can be jointly performed by distributed participants, while none of them can fully access the transferred information. It can be generally extended to quantum communications incorporating an arbitrary number of parties without a trusted central node. Our work opens a route to the realization of distributed quantum communications and computations in quantum networks Show Chinese abstract

Abstract: 量子隐形传态允许在远距离的各方之间传递未知的量子态。 它不仅是量子通信的基本操作，也是实现量子网络中具有前景的应用（如量子密码学和分布式量子计算）的关键任务。 尽管在实现量子通信方面取得了显著进展，但在多个发送方和接收方之间传递共享的量子信息的隐形传态仍然缺失。 在这里，我们提出并实验演示了在量子网络中空间分离各方之间的量子隐形传态。 该协议可以由分布式的参与者共同执行，而其中任何一方都无法完全访问传输的信息。 它可以普遍扩展到包含任意数量参与者的量子通信，而无需可信的中心节点。 我们的工作为在量子网络中实现分布式量子通信和计算开辟了一条道路。