论文标题
多光子干扰在稀疏方案中的玻色子采样器上的样品有效的基准测试
Sample-efficient benchmarking of multi-photon interference on a boson sampler in the sparse regime
论文作者
论文摘要
在存在噪声的情况下，验证量子优势是近期量子设备的研究中的关键开放问题。在这项工作中，我们展示了如何通过使用最大似然方法来评估线性光学量子装置（玻色子采样器）中光子干扰的质量，以测量实验中存在各种噪声源的强度。这使我们能够使用一组稀疏的样品测试给定的玻色子采样实验是否在允许的噪声水平上符合已知的上限以证明量子优势。此外，这种方法使我们可以实时监视噪声的演变，从而创建一个有价值的诊断工具。最后，我们观察到实验化合物中的噪声源，这意味着在我们研究中，观察到的相互分辨率的值不可区分的值，这是我们研究中的主要缺陷，这是一个有效的值，考虑到实验中的所有误差源。
Verification of a quantum advantage in the presence of noise is a key open problem in the study of near-term quantum devices. In this work, we show how to assess the quality of photonic interference in a linear optical quantum device (boson sampler) by using a maximum likelihood method to measure the strength at which various noise sources are present in the experiment. This allows us to use a sparse set of samples to test whether a given boson sampling experiment meets known upper bounds on the level of noise permissible to demonstrate a quantum advantage. Furthermore, this method allows us monitor the evolution of noise in real time, creating a valuable diagnostic tool. Finally, we observe that sources of noise in the experiment compound, meaning that the observed value of the mutual photon indistinguishability, which is the main imperfection in our study, is an effective value taking into account all sources of error in the experiment.
