Single electron optomechanics of the transversal carbon nanotube vibration

碳纳米管既是典型的单电子系统，又是纳米机电谐振器，对电荷输运和运动之间相互作用的研究带来了许多有趣的见解。我们最近作为世界上第一个研究小组证明了悬浮纳米管量子点和超导共面微波谐振器的光力学耦合[arXiv:1904.12188]。库仑封锁极大地增强了耦合。在这里，我们打算在这些结果的基础上，使碳纳米管成为一个独特的系统，其中单电子隧穿，离散的定义良好的电子态，和微波光力学相互作用。量子点-微波腔组合是一种高度通用的工具，具有很大的改进潜力。两个目标将指导我们的工作：一方面，表征电子输运过程的能量传递和振动耦合，以光机械系统为传感器；另一方面，横向碳纳米管振动的量子操纵，以捕获电子的离散状态为辅助。

Carbon nanotubes are both prototypical single electron systems and nano-electromechanical resonators, and research on the interaction between charge transport and motion has led to many fascinating insights. We have recently been able to demonstrate as first research group world-wide optomechanical coupling of a suspended nanotube quantum dot and a superconducting coplanar microwave resonator [arXiv:1904.12188]. The coupling is strongly enhanced by Coulomb blockade. Here, we intend to build on these results, making CNTs a unique system where single electron tunneling, discrete well-defined electronic states, and microwave optomechanics interact. The quantum dot – microwave cavity combination is a highly versatile tool with large potential for further improvement. Two objectives shall guide our work: on the one hand, characterization of energy transfer and vibrational coupling of electronic transport processes, with the optomechanical system as sensor, on the other hand, the quantum manipulation of the transversal CNT vibration, with discrete states of trapped electrons as ancilla.