超构材料的量子光学效应

The quantum optical effects of metamaterial

超构材料作为一种新型人工微结构材料,由于它可以提供自然界不存在或者难以实现的特殊性质,受到了广泛的关注.本研究组基于LC回路模型的量子化方法,研究了超构材料的元激发,并引入了准粒子的概念。'使用双光子干涉的方法,证明了超构材料具有量子特性,并验证了量子化方法的正确性。基于这套量子化方法,进一步研究了超构材料与活性材料相互作用的问题,发现这个体系可以产生受激辐射放大的效应。这些结果表明,超构材料不但可以有效地调控经典光,在量子光学方面也有潜在的应用前景。

As a new kind of artificial materials, metamaterials have attracted wide attention, because they can present special properties which not exist naturally or hard be realized. Based on the quantized method of the LC circuit model, our group has studied the elementary excitation in metamaterial and introduced its ＂quasi-particle ＂. By using the two-photon inference, the quantum property of metamaterial and the correctness of the quantized method were proved. This quantized method was further used to investigate the interaction between metamaterial and active material, and the amplification by the stimulated emission radiation can be found in this system. These results show that metamaterials not only can steer the light in classical regime but also have a potential application in quantum optics.