论文标题
减少量子的需求,同时维持变异量子量表的数值精度:一种无基础方法
Reducing qubit requirements while maintaining numerical precision for the Variational Quantum Eigensolver: A Basis-Set-Free Approach
论文作者
论文摘要
我们使用分子波函数的空间部分的自适应表示,为变异量子本质量提供了一种无基础的方法。我们的方法直接决定了Qubit Hamiltonians的系统特异性表示,同时完全省略了全球定义的基集。在这项工作中,我们在二阶扰动理论的水平上使用直接确定的成对 - 天然轨道。这导致具有高数值准确性的紧凑型Qubit Hamiltonians。我们证明了与紧凑型汉密尔顿人的初始应用,最多可容纳20吨,在同一系统中,传统的表示需要40-100 QUB。
We present a basis-set-free approach to the variational quantum eigensolver using an adaptive representation of the spatial part of molecular wavefunctions. Our approach directly determines system-specific representations of qubit Hamiltonians while fully omitting globally defined basis sets. In this work, we use directly determined pair-natural orbitals on the level of second-order perturbation theory. This results in compact qubit Hamiltonians with high numerical accuracy. We demonstrate initial applications with compact Hamiltonians on up to 20 qubits where conventional representation would for the same systems require 40-100 or more qubits.