Journal
NANO LETTERS
Volume 11, Issue 2, Pages 471-475Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl103228b
Keywords
Plasmon; silver nanowire; network; logic; interference; local field distribution
Categories
Funding
- NSFC [10625418, 10874233, 11004237]
- MOST [2006DFB02020, 2007CB936800, 2009CB930700]
- CAS
- Robert A. Welch Foundation [C-1220, C-1222]
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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.
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