We propose a potentially practical scheme for constructing a quantum network based on a system where three waveguides are coupled to two two-level atoms. In the case of chiral couplings between the waveguides and atoms, we realize a directed single-photon router and the efficiency of single-photon routing reaches 100%. In addition, in this network, the photon input from one port of the channel can be fully routed to any outport of the other two channels by modulating the coupling strength of the waveguides and atoms and the frequency of the incident photon. Thus, a quantum network can be constructed based on our scheme. The influence of the ratio of chiral coupling strength on the properties of the single-photon router is also shown. We also show how the efficiency of routing is affected by system dissipation.

我们提出了一个潜在的实际方案，该方案基于将三个波导耦合到两个两级原子的系统来构建量子网络。在波导与原子之间的手性耦合的情况下，我们实现了定向单光子路由器，单光子路由效率达到100％。另外，在该网络中，通过调制波导和原子的耦合强度以及入射光子的频率，可以将从通道的一个端口输入的光子完全路由到其他两个通道的任何出口。因此，可以基于我们的方案构造一个量子网络。还显示了手性耦合强度比对单光子刻蚀机性能的影响。我们还展示了路由效率如何受到系统耗散的影响。