Electron transport in nanostructures controlled by phase-locked single-cycle light pulses (B08*)

该项目旨在通过锁相单周期光触发纳米结中的电荷电流的相干控制。在类余弦相位的情况下，入射光场与非线性电流-电压特性相结合导致对称性破缺，从而导致电子的净电流。通过等离子体电路或半导体共振隧穿结构的馈隙的横向收缩允许在每个脉冲转移单个或很少电子的限制下工作。纳米和飞秒时空限制使运输研究在一个新的范围内的电流密度，例如库仑排斥可能是有效的，即使在室温下。

The project aims at coherent control of charge currents in nanojunctions triggered by phase-locked single cycles of light. In case of a cosine-like phase, the incident optical field combined with nonlinear current-voltage characteristics causes a symmetry break, resulting in a net current of electrons. Lateral constriction by the feedgaps of plasmonic circuits or in semiconductor resonant tunneling structures allows working in the limit of single or few electrons transferred per pulse. The nanometer and femtosecond spatiotemporal confinement enables transport studies in a new range of current densities where e.g. Coulomb repulsion may be effective even at room temperature.