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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.01156 |
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| _version_ | 1866915825885118464 |
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| author | Luo, H. -X Li, C. Ren, J. -L. Yuan, Y. Wen, Y. -L. Li, J. -F. Wang, Y. -F. Zhang, S. -C. Yan, H. Zhu, S. -L. |
| author_facet | Luo, H. -X Li, C. Ren, J. -L. Yuan, Y. Wen, Y. -L. Li, J. -F. Wang, Y. -F. Zhang, S. -C. Yan, H. Zhu, S. -L. |
| contents | Single photons are the flying qubits of choice for distributing entanglement in a quantum internet. Quantum memories embedded in quantum repeaters are crucial to overcome transmission loss and enhance the rate of quantum communication. A multimode memory can further boost the channel capacity. However, benchmarking and building a practical quantum memory that simultaneously optimizes multiple performance metrics poses two key challenges. Here, we introduce quantum interconnect rate to comprehensively quantify quantum memories, and further demonstrate a high-performance quantum memory that simultaneously integrates three essential criteria at once: large multimode capacity, high efficiency, and high fidelity. Operating on 11-dimensional spatial modes, our memory achieves a uniform efficiency exceeding 80% and qubit storage fidelities above 99%, enabling the efficient storage of high-dimensional qudits. Based on these capabilities, we estimate a distribution of 3.56 bits of quantum information over a 1000-km repeater link in one minute, highlighting a practical pathway toward scalable quantum interconnects and quantum networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_01156 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A high-performance quantum memory for quantum interconnects Luo, H. -X Li, C. Ren, J. -L. Yuan, Y. Wen, Y. -L. Li, J. -F. Wang, Y. -F. Zhang, S. -C. Yan, H. Zhu, S. -L. Quantum Physics Single photons are the flying qubits of choice for distributing entanglement in a quantum internet. Quantum memories embedded in quantum repeaters are crucial to overcome transmission loss and enhance the rate of quantum communication. A multimode memory can further boost the channel capacity. However, benchmarking and building a practical quantum memory that simultaneously optimizes multiple performance metrics poses two key challenges. Here, we introduce quantum interconnect rate to comprehensively quantify quantum memories, and further demonstrate a high-performance quantum memory that simultaneously integrates three essential criteria at once: large multimode capacity, high efficiency, and high fidelity. Operating on 11-dimensional spatial modes, our memory achieves a uniform efficiency exceeding 80% and qubit storage fidelities above 99%, enabling the efficient storage of high-dimensional qudits. Based on these capabilities, we estimate a distribution of 3.56 bits of quantum information over a 1000-km repeater link in one minute, highlighting a practical pathway toward scalable quantum interconnects and quantum networks. |
| title | A high-performance quantum memory for quantum interconnects |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2603.01156 |