论文标题
通过与绝热性快捷方式控制的量子点链中的有效电子转移
Efficient electron transfer in quantum dot chains controlled by a cubic detuning profile via shortcuts to adiabaticity
论文作者
论文摘要
半导体纳米结构中电荷的快速和精确传输是可扩展电子设备的目标之一。从理论上讲，我们通过具有非线性时间依赖性轮廓的电场脉冲来控制电子沿半导体静电定义的量子点线性链的控制。我们表明，这种基本的非线性以及对绝热技术的快捷方式以高保真度加快了电子传输的速度，同时仍然在链的耦合中保持了自旋窗户相互作用和不均匀性下的强大鲁棒性。可以通过控制控制脉冲的最大扫描能量和持续时间来实验设置给定的保真度
Long-distance fast and precise transfer of charge in semiconductor nanostructures is one of the goals for scalable electronic devices. We study theoretically the control of shuttling of an electron along a linear chain of semiconductor electrostatically-defined quantum dots by an electric field pulse with nonlinear time-dependent profile. We show that this essential nonlinearity along with shortcuts to adiabaticity techniques speed up the electron transfer with high fidelity, while still holding great robustness under spin-flip interactions and inhomogeneities in the couplings of the chain. A given fidelity can be set experimentally by controlling the maximum sweep energy and duration of the control pulse
