Scaling current quantum communication demonstrations to a large-scale quantum network will require not only advancements in quantum hardware capabilities, but also robust control of such devices to bridge the gap to user demand. Moreover, the abstraction of tasks and services offered by the quantum network should enable platform-independent applications to be executed without knowledge of the underlying physical implementation. Here we experimentally demonstrate, using remote solid-state quantum network nodes, a link layer and a physical layer protocol for entanglement-based quantum networks. The link layer abstracts the physical-layer entanglement attempts into a robust, platform-independent entanglement delivery service. The system is used to run full state tomography of the delivered entangled states, as well as preparation of a remote qubit state on a server by its client. Our results mark a clear transition from physics experiments to quantum communication systems, which will enable the development and testing of components of future quantum networks.
翻译:将当前量子通信演示扩展为大型量子网络不仅需要量子硬件能力的进步,还需要对此类设备进行强有力的控制,以弥合用户需求的差距。 此外,量子网络提供的任务和服务抽象化应该能够使平台独立的应用程序能够在不知晓基本物理执行的情况下执行。 在这里,我们实验性地展示,使用远程固态量子网络节点、链接层和用于纠缠的量子网络的物理层纠结尝试,将物理层的尝试转换成一个强大的、平台独立的缠绕传递服务。 该系统用来对交付的缠绕状态进行完整状态的扫描,以及由客户在服务器上准备一个远程的qutit状态。 我们的结果标志着从物理实验到量子通信系统的明显转变,这将使未来量子网络的组件得以开发和测试。