Quantum Dot-Based Local Field Imaging Reveals Plasmon-Based Interferometric Logic in Silver Nanowire Networks
Quantum Dot-Based Local Field Imaging Reveals Plasmon-Based Interferometric Logic in Silver Nanowire Networks
复制标题
基于量子点的局部场成像揭示了银纳米线网络中基于等离子体激元的干涉逻辑
DOI：
10.1021/nl103228b
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发表时间：
2011-02-01
期刊：
影响因子：
10.8
通讯作者：
Xu, Hongxing
中科院分区：
文献类型：
--
作者：
Wei, Hong;Li, Zhipeng;Xu, Hongxing
我们发现沿银纳米线传播的等离子体的局部电场分布可以通过在纳米线上覆盖一层量子点来成像，量子点被纳米尺度的介电隔离层挡住纳米线的表面。在具有两个光输入的简单的银纳米线网络中，光偏振和输入场的相位的控制将导波引导到特定的纳米线输出。这些结构的量子点发光图像表明，可以在这些简单的网络上执行一整套与相位相关的干涉逻辑函数。这些结果显示了等离子体光波导支持紧凑干涉逻辑运算的潜力。
We show that the local electric field distribution of propagating plasmons along silver nanowires can be imaged by coating the nanowires with a layer of quantum dots, held off the surface of the nanowire by a nanoscale dielectric spacer layer. In simple networks of silver nanowires with two optical inputs, control of the optical polarization and phase of the input fields directs the guided waves to a specific nanowire output. The QD-luminescent images of these structures reveal that a complete family of phase-dependent, interferometric logic functions can be performed on these simple networks. These results show the potential for plasmonic waveguides to support compact interferometric logic operations.