We propose a novel one-way quantum repeater architecture based on photonic tree-cluster states. Encoding a qubit in a photonic tree cluster protects the information from transmission loss and enables long-range quantum communication through a chain of repeater stations. As opposed to conventional approaches that are limited by the two-way communication time, the overall transmission rate of the current quantum repeater protocol is determined by the local processing time enabling very high communication rates. We further show that such a repeater can be constructed with as little as two stationary qubits and one quantum emitter per repeater station, which significantly increases the experimental feasibility. We discuss potential implementations with diamond defect centers and semiconductor quantum dots efficiently coupled to photonic nanostructures and outline how such systems may be integrated into repeater stations.

中文翻译：

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基于确定性光子发射器接口的单向量子中继器

我们提出了一种基于光子树簇状态的新颖的单向量子中继器体系结构。在光子树簇中对量子位进行编码可保护信息免受传输损失，并通过中继站链实现远程量子通信。与受双向通信时间限制的常规方法相反，当前量子中继器协议的总体传输速率由本地处理时间确定，从而可以实现很高的通信速率。我们进一步表明，这样的中继器可以构建为每个中继器站少至两个固定量子位和一个量子发射器，这大大提高了实验的可行性。