Data underlying the publication: Resource efficient piece-wise entanglement distribution from a quantum switch

We introduce a family of piece-wise distribution protocols that create and deliver stabilizer states ranging from Greenberger-Horne-Zeilinger (GHZ) states to arbitrary graph states via a single entanglement switch. Unlike existing schemes that wait for all Bell-pair links to be established before distributing the desired state, our approach stores only a minimal subset of links while processing every subsequent link immediately. Our protocols provably shorten average individual storage times, and lower cumulative noise as a direct consequence. Furthermore, in order to deliver general stabilizer states to the end nodes efficiently, we utilize a well studied concept of stabilizer states, namely local Clifford equivalence, which allows us to generate an intermediate state, before restoring the desired final state. In our comprehensive numerical evaluation, we compare our delivered state fidelities to prior literature for state sizes up to n = 50 qubits and find that our protocol achieves up to 45% reduction in relative error probability when choosing our scheme over the baseline.<br>This data accompanies the work and comprises its numerical findings.

我们提出一类分段式分发协议，可通过单台纠缠交换机（entanglement switch）生成并分发从格林伯格-霍恩-蔡林格（Greenberger-Horne-Zeilinger, GHZ）态到任意图态的稳定器态（stabilizer states）。与现有方案需等待所有贝尔对链路（Bell-pair links）建立完成后再分发目标态不同，我们的方法仅存储最小链路子集，并可即时处理每一条后续链路。经证明，本协议可缩短平均单节点存储时长，并直接降低累积噪声。此外，为高效地将通用稳定器态分发至终端节点，我们利用了已被充分研究的稳定器态特性——局域克利福德等价（local Clifford equivalence），该特性允许我们先生成中间态，再还原至目标终态。在全面的数值评估中，针对态规模至多为n=50量子比特的场景，我们将所分发态的保真度与先前文献中的结果进行对比，结果显示，相较于基线方案，采用本协议可使相对误差概率最高降低45%。本数据集伴随该研究工作发布，包含其全部数值实验结果。