Realization of a crosstalk-avoided quantum network node with dual-type qubits by the same ion species
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866917557618868224 |
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| author | Feng, L. Huang, Y. -Y Wu, Y. -K. Guo, W. -X. Ma, J. -Y. Yang, H. -X. Zhang, L. Wang, Y. Huang, C. -X. Zhang, C. Yao, L. Qi, B. -X. Pu, Y. -F. Zhou, Z. -C. Duan, L. -M. |
| author_facet | Feng, L. Huang, Y. -Y Wu, Y. -K. Guo, W. -X. Ma, J. -Y. Yang, H. -X. Zhang, L. Wang, Y. Huang, C. -X. Zhang, C. Yao, L. Qi, B. -X. Pu, Y. -F. Zhou, Z. -C. Duan, L. -M. |
| contents | Generating ion-photon entanglement is a crucial step for scalable trapped-ion quantum networks. To avoid the crosstalk on memory qubits carrying quantum information, it is common to use a different ion species for ion-photon entanglement generation such that the scattered photons are far off-resonant for the memory qubits. However, such a dual-species scheme requires elaborate control of the portion and the location of different ion species, and can be subject to inefficient sympathetic cooling. Here we demonstrate a trapped-ion quantum network node in the dual-type qubit scheme where two types of qubits are encoded in the $S$ and $F$ hyperfine structure levels of ${}^{171}\mathrm{Yb}^+$ ions. We generate ion photon entanglement for the $S$-qubit in a typical timescale of hundreds of milliseconds, and verify its small crosstalk on a nearby $F$-qubit with coherence time above seconds. Our work demonstrates an enabling function of the dual-type qubit scheme for scalable quantum networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_14405 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Realization of a crosstalk-avoided quantum network node with dual-type qubits by the same ion species Feng, L. Huang, Y. -Y Wu, Y. -K. Guo, W. -X. Ma, J. -Y. Yang, H. -X. Zhang, L. Wang, Y. Huang, C. -X. Zhang, C. Yao, L. Qi, B. -X. Pu, Y. -F. Zhou, Z. -C. Duan, L. -M. Quantum Physics Generating ion-photon entanglement is a crucial step for scalable trapped-ion quantum networks. To avoid the crosstalk on memory qubits carrying quantum information, it is common to use a different ion species for ion-photon entanglement generation such that the scattered photons are far off-resonant for the memory qubits. However, such a dual-species scheme requires elaborate control of the portion and the location of different ion species, and can be subject to inefficient sympathetic cooling. Here we demonstrate a trapped-ion quantum network node in the dual-type qubit scheme where two types of qubits are encoded in the $S$ and $F$ hyperfine structure levels of ${}^{171}\mathrm{Yb}^+$ ions. We generate ion photon entanglement for the $S$-qubit in a typical timescale of hundreds of milliseconds, and verify its small crosstalk on a nearby $F$-qubit with coherence time above seconds. Our work demonstrates an enabling function of the dual-type qubit scheme for scalable quantum networks. |
| title | Realization of a crosstalk-avoided quantum network node with dual-type qubits by the same ion species |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2306.14405 |