Cross-Platform Comparison of Arbitrary Quantum Computations

• URL: http://arxiv.org/abs/2107.11387v2
• Date: Tue, 27 Jul 2021 15:48:41 GMT
• Title: Cross-Platform Comparison of Arbitrary Quantum Computations
• Authors: Daiwei Zhu, Ze-Pei Cian, Crystal Noel, Andrew Risinger, Debopriyo Biswas, Laird Egan, Yingyue Zhu, Alaina M. Green, Cinthia Huerta Alderete, Nhung H. Nguyen, Qingfeng Wang, Andrii Maksymov, Yunseong Nam, Marko Cetina, Norbert M. Linke, Mohammad Hafezi, Christopher Monroe
• Abstract summary: We report a cross-platform QC comparison using randomized and correlated measurements. We execute several quantum circuits on widely different physical QC platforms and analyze the cross-platform fidelities.
• Score: 0.4077297031876665
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: As we approach the era of quantum advantage, when quantum computers (QCs) can outperform any classical computer on particular tasks, there remains the difficult challenge of how to validate their performance. While algorithmic success can be easily verified in some instances such as number factoring or oracular algorithms, these approaches only provide pass/fail information for a single QC. On the other hand, a comparison between different QCs on the same arbitrary circuit provides a lower-bound for generic validation: a quantum computation is only as valid as the agreement between the results produced on different QCs. Such an approach is also at the heart of evaluating metrological standards such as disparate atomic clocks. In this paper, we report a cross-platform QC comparison using randomized and correlated measurements that results in a wealth of information on the QC systems. We execute several quantum circuits on widely different physical QC platforms and analyze the cross-platform fidelities.

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