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arXiv 2201.03309quant-ph
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参数化量子线路的快速优化结构generator

Fast optimal structures generator for parameterized quantum circuits

Chuangtao Chen, Zhimin He, Shenggen Zheng, Yan Zhou, Haozhen Situ

摘要:

现有的结构优化算法对于变分量子算法(VQA)的每一个新任务都是从头开始优化量子线路的结构,不需要任何先验经验,效率低且耗时长。此外,量子门的数目是这些算法的一个超参数,这是困难和耗时的确定。在本文中,我们提出了一个快速的结构优化算法的VQA自动确定的量子门的数量,并直接生成新的任务与元训练图变分自动编码器(VAE)的最佳结构的一些训练任务。我们还开发了一个元训练预测器来过滤掉性能较差的电路,以进一步加速算法。仿真结果表明,我们的方法输出的结构具有较低的损失,它是70倍的运行时间相比,一个国家的最先进的算法,即DQAS。

英文摘要:

Current structure optimization algorithms optimize the structure of quantum circuit from scratch for each new task of variational quantum algorithms (VQAs) without using any prior experience, which is inefficient and time-consuming. Besides, the number of quantum gates is a hyper-parameter of these algorithms, which is difficult and time-consuming to determine. In this paper, we propose a rapid structure optimization algorithm for VQAs which automatically determines the number of quantum gates and directly generates the optimal structures for new tasks with the meta-trained graph variational autoencoder (VAE) on a number of training tasks. We also develop a meta-trained predictor to filter out circuits with poor performances to further accelerate the algorithm. Simulation results show that our method output structures with lower loss and it is 70 times faster in running time compared to a state-of-the-art algorithm, namely DQAS.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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