Quantum dot-based local field imaging reveals plasmon-based interferometric logic in silver nanowire networks

Hong Wei, Zhipeng Li, Xiaorui Tian, Zhuoxian Wang, Fengzi Cong, Ning Liu, Shunping Zhang, Peter Nordlander, Naomi J. Halas, Hongxing Xu

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)471-475
Number of pages5
JournalNano Letters
Volume11
Issue number2
DOIs
Publication statusPublished - 9 Feb 2011
Externally publishedYes

Keywords

  • interference
  • local field distribution
  • logic
  • network
  • Plasmon
  • silver nanowire

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