论文标题
当前量子计算机上的轻型现场理论
Light-Front Field Theory on Current Quantum Computers
论文作者
论文摘要
我们提出了一种量子算法，用于模拟轻型公式中的量子场理论，并证明了如何使用现有的量子设备来研究相对论核物理学中结合状态的结构。具体而言，我们应用了变异量子本质量算法来找到在基于光量量量化框架基础上获得的光前汉密尔顿的基态。作为演示，我们计算了IBMQ Vigo芯片上的质量，质量半径，衰减常数，电磁形颜色和电荷半径。我们考虑基于物理状态的不同编码的两种实现，并提出可能导致量子优势的开发。这是第一次使用量子场理论的轻率方法来启用量子计算机上的真实物理系统的模拟。
We present a quantum algorithm for simulation of quantum field theory in the light-front formulation and demonstrate how existing quantum devices can be used to study the structure of bound states in relativistic nuclear physics. Specifically, we apply the Variational Quantum Eigensolver algorithm to find the ground state of the light-front Hamiltonian obtained within the Basis Light-Front Quantization framework. As a demonstration, we calculate the mass, mass radius, decay constant, electromagnetic form factor, and charge radius of the pion on the IBMQ Vigo chip. We consider two implementations based on different encodings of physical states, and propose a development that may lead to quantum advantage. This is the first time that the light-front approach to quantum field theory has been used to enable simulation of a real physical system on a quantum computer.
