Multipartite controlled-NOT gates using molecules and Rydberg atoms
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866910088321564672 |
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| author | Bai, Yi-Han Wei, Yue Zhang, Chi Li, Weibin Shao, Xiao-Qiang |
| author_facet | Bai, Yi-Han Wei, Yue Zhang, Chi Li, Weibin Shao, Xiao-Qiang |
| contents | We propose high-fidelity controlled-NOT (CNOT) gates in a hybrid system of polar molecules and Rydberg atoms based on the unconventional Rydberg pumping mechanism. By combining the rich internal structure of polar molecules with the strong dipole-dipole interactions of Rydberg atoms, we realize both two-to-one and one-to-two gate configurations. Numerical simulations show that the gate performance is robust against spontaneous emission from Rydberg states. The approach naturally extends to larger systems, as demonstrated by four-qubit implementations achieving three-to-one and one-to-three CNOT gates with fidelities exceeding 99\%. These results highlight hybrid molecule-Rydberg atom architectures as a promising platform for scalable quantum information processing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_29349 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Multipartite controlled-NOT gates using molecules and Rydberg atoms Bai, Yi-Han Wei, Yue Zhang, Chi Li, Weibin Shao, Xiao-Qiang Quantum Physics We propose high-fidelity controlled-NOT (CNOT) gates in a hybrid system of polar molecules and Rydberg atoms based on the unconventional Rydberg pumping mechanism. By combining the rich internal structure of polar molecules with the strong dipole-dipole interactions of Rydberg atoms, we realize both two-to-one and one-to-two gate configurations. Numerical simulations show that the gate performance is robust against spontaneous emission from Rydberg states. The approach naturally extends to larger systems, as demonstrated by four-qubit implementations achieving three-to-one and one-to-three CNOT gates with fidelities exceeding 99\%. These results highlight hybrid molecule-Rydberg atom architectures as a promising platform for scalable quantum information processing. |
| title | Multipartite controlled-NOT gates using molecules and Rydberg atoms |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2603.29349 |