{"id":51152,"date":"2021-03-18T13:37:43","date_gmt":"2021-03-18T17:37:43","guid":{"rendered":"https:\/\/seniordesign.digitalscholar.rochester.edu\/optics2021\/?p=80"},"modified":"2022-04-13T10:18:54","modified_gmt":"2022-04-13T14:18:54","slug":"brone","status":"publish","type":"post","link":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/brone\/","title":{"rendered":"Plasmonic Nanoantenna Array Metasurfaces and Colloidal Nanoparticles for Single-Photon Source Applications"},"content":{"rendered":"\n
\n
<\/div>\n<\/div>\n\n\n

Jerome Brone<\/p>\n

Advised by Svetlana Lukishova<\/p>\n

Background<\/h2>\n\n\n
\"\"<\/figure>
\n

Single-photon sources are important components in quantum communications systems. Although secure quantum communication can be achieved over short distances with classical sources, single-photon sources are essential for long-distance quantum communication<\/strong> due to losses in communication channels. Using single-photon sources, quantum repeaters can be used to transmit signals over long distances. For quantum repeater protocols, single photons must be indistinguishable<\/strong>. Photon indistinguishability is hard to achieve at room temperature. <\/strong>Many single-photon emitters are in the visible spectral range<\/strong>, and so narrow resonances must be achieved in that range as well.<\/p>\n<\/div><\/div>\n\n\n\n

\"\"<\/figure>
\n

Out of all the plasmonic nanostructures, the highest increase in emission rate and enhancement in fluorescence intensity were achieved using metal plasmonic patch nanoantennas<\/strong>, in which an emitter is placed in a nanoscale dielectric gap between a metal mirror and a metal nanoparticle. Plasmonic nanoantenna array metasurfaces<\/strong> which product narrow resonances may be used to make the linewidth of the photons narrow. Plasmonic patch nanoantennas as elements of such arrays<\/strong> can both enhance the emission rates of the photons and cause the linewidth to be narrow. The goal of my research is to model and investigate plasmonic nanoantenna array metasurfaces with narrow resonances in the visible range, as well as investigate plasmonic nanoparticles which can be used for nanopatch antennas.<\/p>\n<\/div><\/div>\n\n\n

Objective<\/h2>\n\n\n
Modeling and investigating plasmonic nanoantenna array metasurfaces<\/strong> and colloidal plasmonic nanoparticles <\/strong>towards creation of indistinguishable single photons.<\/strong><\/h5>\n\n\n
    \n
  • Numerical modeling <\/b>of plasmonic nanoantenna array metasurface with very narrow <\/b>lattice resonance<\/b> in visible<\/b> spectral range.<\/li>\n
  • Examination of colloidal plasmonic nanoparticles, nanoantenna array metasurfaces, and emitter nanocrystals with atomic force<\/b> microscopy<\/b>.<\/li>\n
  • Fluorescent and spectral measurements <\/b>of colloidal plasmonic nanoparticles, single emitters and emitters with plasmonic nanoantenna array metasurfaces.<\/li>\n<\/ul>\n\n\n

    Single Emitter Samples<\/h3>\n\n\n\n
    \n
    \n
    \n
    \n
    \"\"
    Nanocrystal Quantum Dot<\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
    \n
    \"\"
    NV-Center Nanodiamond<\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n

    Characterizing Plasmonic Nanostructures<\/h3>\n\n\n
    \n
    \n
    \n
    \n
    \"\"
    100 nm Silver Nanocubes<\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
    \n
    \"\"
    Plasmonic Nanoantenna Array Metasurface<\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
    \"\"
    Atomic force microscopy scan of the 100 nm silver nanocubes<\/figcaption><\/figure><\/div>\n\n\n\n
    \n
    <\/div>\n<\/div>\n\n\n\n
    • \"\"<\/figure><\/li>
    • \"\"<\/figure><\/li>
    • \"\"<\/figure><\/li><\/ul>
      Atomic force microscopy scans of the nanoantenna array<\/figcaption><\/figure>\n\n\n\n
      \"\"
      Fluorescence time trace of silver nanocubes displaying fluorescence spikes<\/figcaption><\/figure><\/div>\n\n\n\n
      \"\"
      Fluorescence time trace of silver nanocubes displaying stepwise photoluminescence<\/figcaption><\/figure><\/div>\n\n\n\n
      \"\"
      Image and graph of the spectrum of the silver nanocubes in PVP<\/figcaption><\/figure>\n\n\n\n