论文标题
量子计算机上的辐射过程
Radiative processes on a quantum computer
论文作者
论文摘要
辐射过程（由于粒子的碰撞或腐烂而发出光子/中微子）在原子，核和粒子物理学中起着核心作用。它们的速率是由具有不同初始和最终状态的某些偏离矩阵元素确定的。我们提出了一种使用量子计算机计算它们的方法。它依赖于一个额外的量子，从某种意义上说，它代表光子/中微子。将此基质元素与额外量子振幅的振幅和频率相关的通用公式仅在接近共振的情况下就随之而来。我们通过在简单系统的实际量子计算和模拟中使用该方法来证明该方法的可行性。
Radiative processes, where a photon/neutrino is emitted as a result of a collision or decay of a particle, play a central role in atomic, nuclear and particle physics. Their rate is determined by certain off-diagonal matrix elements with different initial and final states. We propose a method to compute them using quantum computers. It relies on a single extra qubit that, in a certain sense, represents the photon/neutrino. The generic formula relating this matrix element to the amplitude and frequency of oscillations of the extra qubit follows simply in the near resonance case. We demonstrate the feasibility of the method by using it in actual quantum computations and simulations of simple systems.
