损耗对表面等离子体激元压缩态的影响

Effect of losses for squeezed surface plasmons

表面等离子体激元是金属表面电子集体振荡,它以波的形式在金属和介质之间的界面中传播.近期Huck等证明等离子体激元可以处在压缩态,本文利用量子光学的热库理论,研究金波导损耗对表面等离子体激元压缩态的影响,并对Huck等的实验结果给与理论解释.

The surface plasmon polaritons （SPPs） are electromagnetic excitation of electrons in metal surfaces,which propagates in wavelike fashion along the interface between a metal and a dielectric median. Recently Huck et al. reports on the efficient generation,propagation and reemission of squeezed surface plasmons. In this paper,the influence of waveguide loss was discussed for squeezed surface plasmons by means of the heat reservoir theory in quantum optics. Huck’s experimental result is explained theoretically.