论文标题
库仑介导的电子对抗抗抗爆发声
Coulomb-mediated antibunching of an electron pair surfing on sound
论文作者
论文摘要
电子飞盘被设想为量子计算机内的潜在信息链接，但也有望（类似于光子方法）是一个自动固定的量子处理单元。与光子对应物相反，电子 - 量词 - 镜头实现是库仑相互作用的，这提供了纠缠轨道或旋转自由度的直接途径。但是，尚未通过实验建立飞行电子在单个粒子水平上的受控相互作用。在这里，我们报告了一对单电子的抗挑战，该单元通过表面声波通过耦合量子轨道的电路同步穿梭。机上分区过程表现出相互的门控效应，这使我们能够将观察到的排斥力归因于库仑相互作用。我们的单发实验标志着该路线上的一个重要里程碑，以实现飞行中量子操作的受控镜头门。
Electron flying qubits are envisioned as potential information link within a quantum computer, but also promise -- alike photonic approaches -- a self-standing quantum processing unit. In contrast to its photonic counterpart, electron-quantum-optics implementations are subject to Coulomb interaction, which provide a direct route to entangle the orbital or spin degree of freedom. However, the controlled interaction of flying electrons at the single particle level has not yet been established experimentally. Here we report antibunching of a pair of single electrons that is synchronously shuttled through a circuit of coupled quantum rails by means of a surface acoustic wave. The in-flight partitioning process exhibits a reciprocal gating effect which allows us to ascribe the observed repulsion predominantly to Coulomb interaction. Our single-shot experiment marks an important milestone on the route to realise a controlled-phase gate for in-flight quantum manipulations.
