Abstract
In this thesis, we let 397.5nm laser to undergoes spontaneous parametric down-conversion to produce 795nm single photon whose full width at half maximum is about 30ns. After the generation, we make the single photon pass through the hole arrays which are on a metal(Au) surface. With this kind of surface, extraordinary optical transmission could be seen, and the transmission rate of the single photon will be increased. The sample used in our setup is a metal square with 25μm on each side. Arrays formed by holes whose size is 200nm are periodically spread on this metal square, and the interval between two holes is about 430nm. If we consider the effect of diffraction only, the transmission rate will be about 1.5%. However, the sample provided here can increase the optical transmittance to about 40% because of the induced surface plasmon resonance on the surface. Beside, we use electro-optical modulator to modulate the single photon wave-package before it bumping into the metal surface. The experimental result shows that the photon transmitting the metal surface will maintain its purity. We discuss the extraordinary transmission behavior with classical light and then extend the case to the quantum region. The experimental results proved that the extraordinary optical transmission is consistent with the quantum field and will keep the single photon purity.