CSIRO, Materials Science and Engineering, Clayton, Victoria 3168, Australia.
Nano Lett. 2010 Jan;10(1):274-8. doi: 10.1021/nl903455z.
We present an experimental demonstration of strong coupling between a surface plasmon propagating on a planar silver thin film and the lowest excited state of CdSe nanocrystals. Attenuated total reflection measurements demonstrate the formation of plasmon-exciton mixed states, characterized by a Rabi splitting of approximately 112 meV at room temperature. Such a coherent interaction has the potential for the development of nonlinear plasmonic devices, and furthermore, this system is akin to those studied in cavity quantum electrodynamics, thus offering the possibility to study the regime of strong light-matter coupling in semiconductor nanocrystals under easily accessible experimental conditions.
我们展示了在平面银薄膜上传播的表面等离激元与 CdSe 纳米晶体的最低激发态之间的强耦合的实验演示。衰减全反射测量证明了等离激元-激子混合态的形成，其在室温下的拉比分裂约为 112 毫电子伏特。这种相干相互作用有可能开发出非线性等离子体器件，此外，该系统类似于在腔量子电动力学中研究的系统，从而为在易于获得的实验条件下研究半导体纳米晶体中的强光物质耦合状态提供了可能性。
