标题： 实验测量设备无关的量子数字签名 显示英文标题

标题： Experimental measurement-device-independent quantum digital signatures

摘要： 我们提出并实验实现了新颖的可重新配置量子密钥分发（QKD）方案，在该方案中，用户可以在传统QKD和最近提出的测量设备无关（MDI）QKD之间实时切换。通过此设置，我们展示了在三个通过两条量子信道连接的远程参与方之间分发量子密钥，这是之前未尝试过的任务。此外，作为一种突出的应用，我们从使用测量设备无关链路的网络中提取了第一个量子数字签名（QDS）速率。在此过程中，我们引入了一种高效的协议，可以从同一数据块中提炼出多个签名，从而减少样本中的统计波动并提高最终的QDS速率。 显示英文摘要

摘要： We propose and experimentally implement a novel reconfigurable quantum key distribution (QKD) scheme, where the users can switch in real time between conventional QKD and the recently-introduced measurement-device-independent (MDI) QKD. Through this setup, we demonstrate the distribution of quantum keys between three remote parties connected by only two quantum channels, a previously unattempted task. Moreover, as a prominent application, we extract the first quantum digital signature (QDS) rates from a network that uses a measurement-device-independent link. In so doing, we introduce an efficient protocol to distil multiple signatures from the same block of data, thus reducing the statistical fluctuations in the sample and increasing the final QDS rate.