Long-Range Dipole-Dipole Interactions in a Plasmonic Lattice

Ashwin K. Boddeti, Jun Guan, Tyler Sentz, Xitlali Juarez, Ward Newman, Cristian Cortes, Teri W. Odom, Zubin Jacob*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Spontaneous emission of quantum emitters can be enhanced by increasing the local density of optical states, whereas engineering dipole-dipole interactions requires modifying the two-point spectral density function. Here, we experimentally demonstrate long-range dipole-dipole interactions (DDIs) mediated by surface lattice resonances in a plasmonic nanoparticle lattice. Using angle-resolved spectral measurements and fluorescence lifetime studies, we show that unique nanophotonic modes mediate long-range DDI between donor and acceptor molecules. We observe significant and persistent DDI strengths for a range of densities that map to ∼800 nm mean nearest-neighbor separation distance between donor and acceptor dipoles, a factor of ∼100 larger than free space. Our results pave the way to engineer and control long-range DDIs between an ensemble of emitters at room temperature.

Original languageEnglish (US)
Pages (from-to)22-28
Number of pages7
JournalNano letters
Volume22
Issue number1
DOIs
StatePublished - Jan 12 2022

Keywords

  • dipole-dipole interactions
  • long-range resonance energy transfer
  • plasmonic lattice
  • surface lattice resonance

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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