A model of an all-plasmonic switch based on a graphene waveguide integrated with a stub nanoresonator loaded with a quantum dot is considered. Using the full-wave numerical simulation, it is shown that successive on/off switching of the control surface plasmon – polariton wave at the input of the waveguide leads to a change in the phase of the signal plasmon – polariton wave in the nanoresonator by π. This causes reversible switching of the device operation regime – from almost complete blocking to stable transmission of the signal plasmon – polariton wave through the waveguide. The effect is implemented at rates of ~0.5 THz for infrared electromagnetic waves localised in a device with a switching region of 40 × 20 nm.

中文翻译：

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加载有包层量子点的石墨烯纳米腔中的可逆等离子体转换

考虑了基于石墨烯波导的全等离子体开关模型，该波导与加载有量子点的短纳米谐振器集成。使用全波数值模拟表明，在波导输入端控制表面等离子体 - 极化波的连续开/关切换导致纳米谐振器中信号等离子体 - 极化波的相位变化 π . 这会导致器件操作机制的可逆切换——从几乎完全阻塞到信号等离子体——极化波通过波导的稳定传输。对于位于开关区域为 40 × 20 nm 的器件中的红外电磁波，该效应以 ~0.5 THz 的速率实现。