We present a first attempt to design a quantum circuit for the determination of the parton content of the proton through the estimation of parton distribution functions (PDFs), in the context of high energy physics (HEP). The growing interest in quantum computing and the recent developments of new algorithms and quantum hardware devices motivates the study of methodologies applied to HEP. In this work we identify architectures of variational quantum circuits suitable for PDFs representation (qPDFs). We show experiments about the deployment of qPDFs on real quantum devices, taking into consideration current experimental limitations. Finally, we perform a global qPDF determination from collider data using quantum computer simulation on classical hardware and we compare the obtained partons and related phenomenological predictions involving hadronic processes to modern PDFs.

中文翻译：

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用量子计算机确定质子含量

我们提出了一种在高能物理（HEP）的背景下设计一种量子电路的方法，该量子电路用于通过估计光子分布函数（PDF）来确定质子的光子含量。对量子计算的兴趣日益增长，以及新算法和量子硬件设备的最新发展，推动了对应用于HEP的方法学的研究。在这项工作中，我们确定了适用于PDF表示（qPDF）的变分量子电路的体系结构。考虑到当前的实验局限性，我们展示了有关在实际量子设备上部署qPDF的实验。最后，