Exciton-assisted optomechanics with suspended carbon nanotubes
Exciton-assisted optomechanics with suspended carbon nanotubes
复制标题
DOI：
10.1088/1367-2630/14/11/115003
复制
发表时间：
2009-11
影响因子：
3.3
通讯作者：
I. Wilson-Rae;C. Galland;W. Zwerger;A. Imamoğlu
中科院分区：
文献类型：
--
作者：
I. Wilson-Rae;C. Galland;W. Zwerger;A. Imamoğlu
我们提出了一个基于形变势(DP)激子-声子耦合在悬浮碳纳米管中诱导强光机械效应的框架。激子被限制在一个不均匀的轴向电场中，产生能级间距在毫电子伏范围内、特征尺寸在10纳米范围内的光学活性量子点。横场通过电子-声子相互作用在量子点和纳米管的弯曲模之间产生可调谐的参数耦合。我们推导了相应的激子DPS，并表明这种相互作用使基模的光学基态冷却变得有效，并使我们能够实现Jaynes-Cummings和Rabi模型的强耦合和超强耦合。
We propose a framework for inducing strong optomechanical effects in a suspended carbon nanotube based on deformation potential (DP) exciton–phonon coupling. The excitons are confined using an inhomogeneous axial electric field which generates optically active quantum dots with a level spacing in the milli-electronvolt range and a characteristic size in the 10 nm range. A transverse field induces a tunable parametric coupling between the quantum dot and the flexural modes of the nanotube mediated by electron–phonon interactions. We derive the corresponding excitonic DPs and show that this interaction enables efficient optical ground-state cooling of the fundamental mode and could allow us to realize the strong and ultra-strong coupling regimes of the Jaynes–Cummings and Rabi models.