标题： 通过波粒二象性实验认证半设备无关安全性 显示英文标题

标题： Certifying semi-device-independent security via wave-particle duality experiments

摘要： 波粒二象性已知等价于基于最小熵和最大熵的熵不确定性关系，在量子密码学中具有明确的操作意义。 在这里，我们推导了波粒关系与半设备无关（SDI）安全框架之间的联系。 特别是，我们将一个SDI见证者完全用两个互补的干涉量来表示：可见度和输入可区分性。 对干涉量应用对称条件，我们确定了一个场景，在该场景中经典界限被违反，并且在可调分束器的波粒实验中满足安全条件。 这使得可以直接从互补的干涉量认证非经典性和密钥速率的正性。 此外，我们使用可调干涉仪中的光的轨道角动量编码量子态进行了原理验证实验，验证了我们的理论预测。 最后，我们分析了SDI安全条件的改进界限，有效地扩大了可以认证安全通信的参数区域。 显示英文摘要

摘要： Wave-particle duality is known to be equivalent to an entropic uncertainty relation based on the min- and max-entropies, which have a clear operational meaning in quantum cryptography. Here, we derive a connection between wave-particle relations and the semi-device-independent (SDI) security framework. In particular, we express an SDI witness entirely in terms of two complementary interferometric quantities: visibility and input distinguishability. Applying a symmetry condition to the interferometric quantities, we identify a scenario in which the classical bound is violated and the security condition is met in wave-particle experiments with a tunable beam splitter. This enables the certification of non-classicality and the positivity of the key rate directly from complementary interferometric quantities. Moreover, we perform a proof-of-principle experiment using orbital-angular-momentum encoded quantum states of light in a tunable interferometer, validating our theoretical predictions. Finally, we analyze an improved bound on the SDI security condition, effectively enlarging the parameter region where secure communication can be certified.