Quantum generative adversarial networks based on a readout error mitigation method with fault tolerant mechanism  

作　　者：赵润盛 马鸿洋 程涛 王爽 范兴奎 Run-Sheng Zhao;Hong-Yang Ma;Tao Cheng;Shuang Wang;Xing-Kui Fan(School of Sciences,Qingdao University of Technology,Qingdao 266033,China;School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266033,China)

机构地区：[1]School of Sciences,Qingdao University of Technology,Qingdao 266033,China [2]School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266033,China

出　　处：《Chinese Physics B》2024年第4期285-295,共11页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Shandong Province,China (Grant No.ZR2021MF049);Joint Fund of Natural Science Foundation of Shandong Province (Grant Nos.ZR2022LLZ012 and ZR2021LLZ001)。

摘　　要：Readout errors caused by measurement noise are a significant source of errors in quantum circuits,which severely affect the output results and are an urgent problem to be solved in noisy-intermediate scale quantum(NISQ)computing.In this paper,we use the bit-flip averaging(BFA)method to mitigate frequent readout errors in quantum generative adversarial networks(QGAN)for image generation,which simplifies the response matrix structure by averaging the qubits for each random bit-flip in advance,successfully solving problems with high cost of measurement for traditional error mitigation methods.Our experiments were simulated in Qiskit using the handwritten digit image recognition dataset under the BFA-based method,the Kullback-Leibler(KL)divergence of the generated images converges to 0.04,0.05,and 0.1 for readout error probabilities of p=0.01,p=0.05,and p=0.1,respectively.Additionally,by evaluating the fidelity of the quantum states representing the images,we observe average fidelity values of 0.97,0.96,and 0.95 for the three readout error probabilities,respectively.These results demonstrate the robustness of the model in mitigating readout errors and provide a highly fault tolerant mechanism for image generation models.

关 键 词：readout errors quantum generative adversarial networks bit-flip averaging method fault tolerant mechanisms 

分 类 号：O413[理学—理论物理] TP181[理学—物理]