论文标题
准旋转旋转误差抑制量子的准经典规则
Quasi-Classical Rules for Qubit Spin-Rotation Error Suppression
论文作者
论文摘要
量子计算中经常遇到的系统误差的来源是控制脉冲中的缺陷，该脉冲是控制Qubit Gate操作的经典字段。从对自旋波函数的量子机械时间进化运算符的分析中，已经证明复合脉冲可以减轻某些系统误差，并开发了一种吸引人的几何解释，以设计错误支持误差的复合脉冲。在这里，我们表明可以在准经典框架中获得这些相同的脉冲序列。这就提出了一个问题，即是否存在错误纠正程序，以无法在准经典公式中复制的方式利用纠缠。
A frequently encountered source of systematic error in quantum computations is imperfections in the control pulses which are the classical fields that control qubit gate operations. From an analysis of the quantum mechanical time-evolution operator of the spin wavefunction, it has been demonstrated that composite pulses can mitigate certain systematic errors and an appealing geometric interpretation was developed for the design of error-suppressing composite pulses. Here we show that these same pulse sequences can be obtained within a quasi-classical framework. This raises the question of whether error-correction procedures exist that exploit entanglement in a manner that can not be reproduced in the quasi-classical formulation.
