Realization of a functioning dual-type trapped-ion quantum network node
- Yuan-Yuan Huang
- Lu Feng
- Yu-Kai Wu
- Yu-Lin Xu
- Lin Zhang
- Zhai-Bin Cui
- Chuan-Xin Huang
- Chi Zhang
- Shi-An Guo
- Quan-Xin Mei
- Bin-Xiang Qi
- Yong Xu
- Yun-Fei Pu
- Zi-Chao Zhou
- Lu-Ming Duan
2025-12-03
Trapped ions constitute a promising platform for implementation of a quantum network. Recently, a dual-type qubit scheme has been realized in a quantum network node where communication qubits and memory qubits are encoded in different energy levels of the same ion species, such that the generation of ion-photon entanglement on the communication qubits has negligible cross-talk error on the preloaded quantum information in the memory qubits. However, to achieve versatile applications of a quantum network, a crucial component of the dual-type node, namely, the entangling gate between the communication and the memory qubits, is still missing. Here, we report a dual-type quantum network node equipped with ion-photon entanglement generation, cross-talk–free quantum memory, and entangling gates between dual-type qubits simultaneously. We demonstrate its practical applications including the passive quantum-state teleportation and the preparation of multipartite entangled state. Our work achieves the necessary components of a dual-type quantum network node.