We use a massively parallel simulator of a universal quantum computer to benchmark some of the most powerful supercomputers in the world. We find nearly ideal scaling behavior on the Sunway TaihuLight, the K computer, the IBM BlueGene/Q JUQUEEN, and the Intel Xeon based clusters JURECA and JUWELS. On the Sunway TaihuLight and the K computer, universal quantum computers with up to 48 qubits can be simulated by means of an adaptive two-byte encoding to reduce the memory requirements by a factor of eight. Additionally, we discuss an alternative approach to alleviate the memory bottleneck by decomposing entangling gates such that low-depth circuits with a much larger number of qubits can be simulated.
@article{arxiv.1912.03243,
title = {Benchmarking Supercomputers with the J\"ulich Universal Quantum Computer Simulator},
author = {Dennis Willsch and Hannes Lagemann and Madita Willsch and Fengping Jin and Hans De Raedt and Kristel Michielsen},
journal= {arXiv preprint arXiv:1912.03243},
year = {2022}
}
Comments
This article is a book contribution based on arXiv:1805.04708