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arXiv · 2506.23562

Realization of a functioning dual-type trapped-ion quantum network node

Y. -Y. Huang·L. Feng·Y. -K. Wu·Y. -L. Xu·L. Zhang·Z. -B. Cui·C. -X. Huang·C. Zhang·S. -A. Guo·Q. -X. Mei·B. -X. Qi·Y. Xu·Y. -F. Pu·Z. -C. Zhou·L. -M. Duan
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Abstract

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 the communication qubits and the 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 crosstalk error on the preloaded quantum information in the memory qubits. However, to achieve the 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, crosstalk-free quantum memory and entangling gates between the dual-type qubits simultaneously. We demonstrate its practical applications including the quantum state teleportation and the preparation of multipartite entangled state. Our work achieves the necessary components of a dual-type quantum network node and paves the way toward its applications in a large-scale quantum internet.

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Y. -Y. Huang, L. Feng, Y. -K. Wu, Y. -L. Xu, L. Zhang, Z. -B. Cui, C. -X. Huang, C. Zhang, S. -A. Guo, Q. -X. Mei, B. -X. Qi, Y. Xu, Y. -F. Pu, Z. -C. Zhou, L. -M. Duan. 2025-06-30. Realization of a functioning dual-type trapped-ion quantum network node. https://arxiv.org/abs/2506.23562

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