论文标题
微磁体集成量子点阵列中的三个单独的两轴控制旋风量子
Three individual two-axis control of singlet-triplet qubits in a micromagnet integrated quantum dot array
论文作者
论文摘要
我们报告了带有集成的微磁力的GAAS栅极定义的六分位量子点阵列中两个电子自旋值的单独限制和两轴量子量操作。作为迈向多项量子操作的第一步，我们证明了三个单旋转螺丝量Qubits的连贯操作，显示所有双点位点中都不足的Larmor和Ramsey振荡。我们提供了与位点相关场梯度和RMS电气和磁噪声的准确度量，我们讨论了简单的矩形微型磁铁在多个量子点阵列中实际使用的适当性。我们还讨论了当前局限性和可能在扩展线性阵列中同时实现多量程操作的可能策略。
We report individual confinement and two-axis qubit operations of two electron spin qubits in GaAs gate-defined sextuple quantum dot array with integrated micro-magnet. As a first step toward multiple qubit operations, we demonstrate coherent manipulations of three singlet-triplet qubits showing underdamped Larmor and Ramsey oscillations in all double dot sites. We provide an accurate measure of site site-dependent field gradients and rms electric and magnetic noise, and we discuss the adequacy of simple rectangular micro-magnet for practical use in multiple quantum dot arrays. We also discuss current limitations and possible strategies for realizing simultaneous multi multi-qubit operations in extended linear arrays.
