Velocity control of electromagnetic waves using metamaterials and its applications

我们利用亚波长人工原子组装而成的超材料实现了电磁感应透明(EIT)，并研究了控制EIT特性的方法。在微波领域，我们实现了一种通过入射角来控制传输延迟的方法和一种通过施加电压来控制EIT特性的方法。作为后一种方法的应用，我们演示了脉冲在超材料中的存储和检索。我们还利用含非线性元件的EIT超材料实现了高效的混频。

We realized electromagnetically induced transparency (EIT) using metamaterial, which is an assembly of subwavelength artificial atoms, and investigated methods to control EIT properties. In microwave regions, we realized a method to control the propagation delay by the incident angle and a method to control the EIT properties by applied voltages. As an application of the latter method, we demonstrated storage and retrieval of a pulse in the metamaterial. We also achieved efficient frequency mixing using EIT metamaterial with nonlinear elements.