论文标题
量子一致性测试
Quantum Conformance Test
论文作者
论文摘要
我们介绍了解决符合测试问题的协议，该协议包括确定正在测试的过程是否符合参考文献。我们认为一个过程以其产生的末端产品集为特征，该过程是根据给定概率分布生成的。我们在假设检验的背景下提出问题，并考虑将对象建模为纯损失通道的特定情况。从理论上讲，我们以两种模式挤压真空和光子计数的形式使用易于使用的资源和测量方案的简单量子策略可以胜过任何经典策略。我们通过实验实现此协议，利用光学双光束，验证了我们的理论结果，并证明在此任务中，在现实环境中存在量子优势。
We introduce a protocol addressing the conformance test problem, which consists in determining whether a process under test conforms to a reference one. We consider a process to be characterized by the set of end-product it produces, which is generated according to a given probability distribution. We formulate the problem in the context of hypothesis testing and consider the specific case in which the objects can be modeled as pure loss channels. We demonstrate theoretically that a simple quantum strategy, using readily available resources and measurement schemes in the form of two-mode squeezed vacuum and photon-counting, can outperform any classical strategy. We experimentally implement this protocol, exploiting optical twin beams, validating our theoretical results, and demonstrating that, in this task, there is a quantum advantage in a realistic setting.
