2021/12/21 by Rui Zhang, Li-Zheng Liu, Zheng-Da Li +7 · 25 citations
Computer Science · Engineering · Physics and Astronomy · #Algorithm #Computer science #Electrical engineering #Electronic engineering #Encoding (memory) #Engineering #Optical Network Technologies #Photonics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum computer #Quantum mechanics #Quantum network #Qubit #Repeater (horology) #Theoretical computer science #Topology (electrical circuits) #quant-ph
paper · pdf · open access · doi:10.1364/optica.439170
published in Optica 9(2), 152 (Optica Publishing Group) · 8 pages, 5 figures
openalex publication_date 2021/12/21 · arxiv created 2022/03/15 · arxiv updated 2022/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The all-photonic quantum repeater (APQR) is a promising repeater scheme to realize long-distance quantum communication. For a practical APQR, an indispensable requirement is the robustness of the repeater graph state (RGS) against photon loss. We propose a new loss-tolerant scheme by applying the generalized Shor code to RGS, which can be experimentally demonstrated with current technology. Experimentally, we first prepare and verify the nine-qubit Shor code. Then, by applying the generalized Shor code to APQR and preparing a simplified encoded RGS with the structure of 1×2 based on the Shor code state, the effectiveness of our loss-tolerant scheme and the loss tolerance of the encoded RGS are respectively verified. Our results make an essential step toward a practical APQR and enrich the research of quantum error correction code.