Spin-Based Photonics via Electromagnetically Induced Transparency

摘要

Research efforts have focused on the development and implementation of electromagnetically-induced transparency (EIT) from electron spin coherence in a semiconductor quantum well waveguide. Experimental studies have shown an induced transmission resonance arising from the electron spin coherence in the differential transmission spectrum. The induced resonance can be viewed as a signature of EIT from the electron spin coherence. Studies of the polarization and magnetic field dependence further confirm the physical mechanism of the induced resonance. The experimental results are in good agreement with the theoretical calculation. In addition, extensive experimental efforts have also been carried out to understand how electron spin coherence contributes to coherent nonlinear optical processes in semiconductors with the aim of further optimizing the EIT process.