论文标题
耐损失的全光量子量子中继器，带有广义的海岸代码
Loss-tolerant all-photonic quantum repeater with generalized Shor code
论文作者
论文摘要
全光量子量子中继器（APQR）是实现长距离量子通信的有前途的中继器计划。对于实用的APQR，必不可少的要求是中继器图状态（RGS）对光子损失的鲁棒性。我们通过将广义的Shor代码应用于RGS提出了一种新的耐损失方案，可以通过当前技术实验证明。在实验上，我们首先准备并验证九个Qubit Shor代码。然后，通过将广义的Shor代码应用于APQR并根据Shor Code状态准备了$ 1 \ times2 $的简化编码的RG，我们的容忍度耐受性方案的有效性和编码RGS的损失公差得到了验证。我们的结果是迈向实用APQR的重要一步，并丰富了量子误差校正法规的研究。
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 $1\times2$ 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.
