부산대학교 도서관

We proposed a new multichannel scheme of quantum routing for single plasmons with two quantum dots (QDs) side coupled to two plasmonic waveguides, one of which is infinite and the other is semi-infinite, with a junction. We investigated theoretically the routing properties of the proposed system for the incident single plasmons, such as the transmission, reflection, and transfer rates via the real-space approach. Our results show that in such a coupled system, the incident single plasmons can be routed by controlling the parameters, such as the detuning, the atomic transition frequencies, the coupling strengths, and the spacing between QDs. In particular, we showed that the transfer rate of single plasmons could be greatly changed according to the position of the junction. Our multichannel scheme for routing of single plasmons could be utilized for realizing quantum devices, such as quantum switches, directional couplers, and quantum routers. [ABSTRACT FROM AUTHOR]