NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden.
Center for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden.
Phys Rev Lett. 2023 Feb 24;130(8):087003. doi: 10.1103/PhysRevLett.130.087003.
We explore the energetics of microwaves interacting with a double quantum dot photodiode and show wave-particle aspects in photon-assisted tunneling. The experiments show that the single-photon energy sets the relevant absorption energy in a weak-drive limit, which contrasts the strong-drive limit where the wave amplitude determines the relevant-energy scale and opens up microwave-induced bias triangles. The threshold condition between these two regimes is set by the fine-structure constant of the system. The energetics are determined here with the detuning conditions of the double dot system and stopping-potential measurements that constitute a microwave version of the photoelectric effect.
我们探讨了微波与双量子点光电二极管相互作用的能量学，并展示了光子辅助隧穿中的波动-粒子特性。实验表明，在弱驱动极限下，单光子能量决定了相关的吸收能量，这与强驱动极限形成对比，在强驱动极限下，波幅决定了相关能量尺度，并开辟了微波诱导的偏置三角形。这两种模式之间的阈值条件由系统的精细结构常数决定。这里的能量学是通过双点系统的失谐条件和截止电势测量来确定的，这构成了光电效应的微波版本。
