论文标题
量子设备的各种认证
Variational certification of quantum devices
论文作者
论文摘要
对现实量子计算机施加的要求之一是提供可以重复和复制的计算结果。在需要多次重复量子计算过程的情况下，至关重要的是，量子设备的副本在产生的结果的意义上是相似的。在这项工作中，我们描述了一个基于变异量子本素的简单过程，该过程可用于比较量子设备。该过程是通过将choi-jamiołkowski同构与矩阵对角线化的变异杂种量子式的过程相结合而开发的。我们通过分析其在随机量子通道上的作用，将引入的过程与基于标准界限的方案进行比较。我们还讨论了所述过程对噪声的敏感性，并通过在IBM量子计算机上运行该过程来证明其在现实情况下的可行性。
One of the requirements imposed on the realistic quantum computers is to provide computation results which can be repeated and reproduced. In the situation when one needs to repeat the quantum computation procedure several times, it is crucial that the copies of the quantum devices are similar in the sense of the produced results. In this work, we describe a simple procedure based on variational quantum eigensolver which can be utilized to compare quantum devices. The procedure is developed by combining Choi-Jamiołkowski isomorphism with the variational hybrid quantum-classical procedure for matrix diagonalization. We compare the introduced procedure with the scheme based on the standard bounds for the similarity between quantum operations by analysing its action on random quantum channels. We also discuss the sensitivity of the described procedure to the noise, and we provide numerical results demonstrating its feasibility in realistic scenarios by running the procedure on IBM quantum computer.
