Quantum computers are on the brink of surpassing the capabilities of even the most powerful classical computers, which naturally raises the question of how one can trust the results of a quantum computer when they cannot be compared to classical simulation Here, we present a cross-verification technique that exploits the principles of measurement-based quantum computation to link quantum circuits of different input size, depth, and structure. Our technique enables consistency checks of quantum computations between independent devices, as well as within a single device. We showcase our protocol by applying it to five state-of-the-art quantum processors, based on four distinct physical architectures: nuclear magnetic resonance, superconducting circuits, trapped ions, and photonics, with up to six qubits and up to 200 distinct circuits.

中文翻译：

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独立量子器件的交叉验证

量子计算机即将超越最强大的经典计算机的能力，这自然引发了一个问题：当量子计算机的结果无法与经典模拟进行比较时，人们如何相信它们在这里，我们提出了一个交叉验证利用基于测量的量子计算原理来连接不同输入大小、深度和结构的量子电路的技术。我们的技术可以对独立设备之间以及单个设备内的量子计算进行一致性检查。我们展示了我们的协议，将其应用于五个最先进的量子处理器，基于四种不同的物理架构：核磁共振、超导电路、俘获离子和光子学，具有多达 6 个量子位和多达 200 个不同的电路.