论文标题
电驱动硅自旋吨位的非线性响应和串扰
Nonlinear response and crosstalk of electrically driven silicon spin qubits
论文作者
论文摘要
基于微磁铁的电偶极旋转共振（EDSR）为在栅极定义的量子点中的近期密集阵列的近期缩放阵列提供了一个有吸引力的路径，同时保持了较长的相干时间和高对照的保真度。但是，使用多路复用驱动器准确地控制量子数阵列将需要了解可能会降低操作保真度的串扰机制。我们确定了一种新颖的串扰机制，当相邻Qubit的驱动器打开时，驱动Qubit的Rabi频率会大大改变。这些观察结果提出了缩放单量控制的重要考虑因素。
Micromagnet-based electric dipole spin resonance (EDSR) offers an attractive path for the near-term scaling of dense arrays of silicon spin qubits in gate-defined quantum dots while maintaining long coherence times and high control fidelities. However, accurately controlling dense arrays of qubits using a multiplexed drive will require an understanding of the crosstalk mechanisms that may reduce operational fidelity. We identify a novel crosstalk mechanism whereby the Rabi frequency of a driven qubit is drastically changed when the drive of an adjacent qubit is turned on. These observations raise important considerations for scaling single-qubit control.
