AI 中文总结
本研究开发了基于费曼规则的量子门，设计通用量子电路计算部分子层次Drell-Yan散射截面，可分离图的干涉效应，为任意散射过程的量子计算及干涉分析奠定基础。
AI 中文摘要
我们探究了将简单费曼图高效构建到量子器件中的可能性。更准确地说，我们研究了部分子层次上的Drell-Yan轻子对产生过程，其形式为 q qbar -> gamma/Z -> l- l+。我们开发了利用简单费曼规则构建相关图的量子门，例如顶点门V和传播子门P。我们展示了量子电路如何在相空间中同时计算多个振幅，以及如何从输出中得到完整的积分截面。除此之外，我们还展示了该电路如何通过简单的基矢旋转，同时分离出贡献图的干涉效应。该电路设计具有通用性，因此本研究为任意散射过程的计算实现及高效干涉分析迈出了重要一步。
英文摘要
We probe the possibilities of efficiently constructing simple Feynman diagrams into quantum devices. More precisely, we study Drell-Yan lepton pair creation at the partonic level of the form q qbar -> gamma/Z -> l- l+. We develop quantum gates that build up the relevant diagrams using simple Feynman rules, such as vertex and propagator gates V and P. We show how the quantum circuit may compute simultaneous amplitudes in the phase space and how to reach the full integrated cross section from the outputs. In addition to this, we also show how the circuit is able to simultaneously isolate the interference effects of the contributing diagrams by a simple basis rotation. The circuit design is made to be general, and thus this work constitutes a step towards the implementation of arbitrary scattering process computations and efficient interference analyses.
Comments16 pages, 18 figures, 1 table
