Cavity optomechanics allows the characterization of a vibration mode, its cooling and quantum manipulation using electromagnetic fields. Regarding nanomechanical as well as electronic properties, single wall carbon nanotubes are a prototypical experimental system. At cryogenic temperatures, as high quality factor vibrational resonators, they display strong interaction between motion and single-electron tunneling. Here, we demonstrate large optomechanical coupling of a suspended carbon nanotube quantum dot and a microwave cavity, amplified by several orders of magnitude via the nonlinearity of Coulomb blockade. From an optomechanically induced transparency (OMIT) experiment, we obtain a single photon coupling of up to g₀ = 2π ⋅ 95 Hz. This indicates that normal mode splitting and full optomechanical control of the carbon nanotube vibration in the quantum limit is reachable in the near future. Mechanical manipulation and characterization via the microwave field can be complemented by the manifold physics of quantum-confined single electron devices.

腔光力学允许表征振动模式，其冷却和使用电磁场的量子操纵。关于纳米机械以及电子性能，单壁碳纳米管是一个典型的实验系统。在低温下，作为高​​质量因子振动谐振器，它们在运动和单电子隧穿之间显示出强大的相互作用。在这里，我们展示了一个悬浮的碳纳米管量子点和一个微波腔的大光机耦合，通过库仑阻塞的非线性放大了几个数量级。从optomechanically诱导透明（忽略）的实验中，我们得到了一个单光子上的耦合到克₀  = 2 π ＆CenterDot;＆95 Hz。这表明在不久的将来可以实现碳纳米管振动的正常模式分裂和完全光机械控制。通过微波场的机械操作和表征可以通过量子受限的单电子器件的多种物理学来补充。