发表机构
NRC “Kurchatov institute”（库尔恰托夫国立研究中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究提出利用激光脉冲将电荷量子比特态转换为三子态以恢复共振隧穿，实现高速可靠的单量子比特正交旋转操作。
AI 中文摘要
提出了一种在半导体非对称双量子点中控制电荷量子比特的方案，其中单个量子点之间的隧穿耦合被抑制。激光脉冲将量子比特的逻辑单电子态转换为辅助三子态，由于粒子间库仑相互作用补偿了结构不对称性，共振隧穿条件得以恢复。给出了执行正交单量子比特旋转的条件。对于二维结构，计算了量子比特的参数，并获得了反转操作的保真度对激光场参数和耗散过程速率的依赖关系。研究表明，所考虑的算法具有高速度和高可靠性。
英文摘要
A scheme for controlling a charge qubit on a semiconductor asymmetric double quantum dot with suppressed tunnel coupling between individual quantum dots is proposed. Laser pulses convert the logical single-electron states of the qubit into auxiliary trion states, for which the resonant tunneling condition is restored due to the compensation of structural asymmetry by the Coulomb interaction of the particles. The conditions for performing orthogonal single-qubit rotations are formulated. For a two-dimensional structure, the parameters of the qubit are calculated, and the dependence of the fidelity of the inversion operation on the parameters of the laser field and the rates of dissipative processes is obtained. It is shown that the considered algorithm is characterized by high speed and reliability.
