Single-molecule optomechanics in “picocavities”

Trapping light with noble metal nanostructures overcomes the diffraction limit and can confine light to volumes typically on the order of 30 cubic nanometers. We found that individual atomic features inside the gap of a plasmonic nanoassembly can localize light to volumes well below 1 cubic nanomete...

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Detalhes bibliográficos
Autores: Benz, Felix, Schmidt, Mikolaj K., Dreismann, Alexander, Chikkaraddy, Rohit, Zhang, Yao, Demetriadou, Angela, Carnegie, Cloudy, Ohadi, Hamid, Nijs, Bart de, Esteban, Ruben, Aizpurua, Javier, Baumberg, Jeremy J.
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2016
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::ff67674e8ccaba95adff34604134925b
Acesso em linha:http://hdl.handle.net/10261/246421
Access Level:Acceso aberto
Descrição
Resumo:Trapping light with noble metal nanostructures overcomes the diffraction limit and can confine light to volumes typically on the order of 30 cubic nanometers. We found that individual atomic features inside the gap of a plasmonic nanoassembly can localize light to volumes well below 1 cubic nanometer (“picocavities”), enabling optical experiments on the atomic scale. These atomic features are dynamically formed and disassembled by laser irradiation. Although unstable at room temperature, picocavities can be stabilized at cryogenic temperatures, allowing single atomic cavities to be probed for many minutes. Unlike traditional optomechanical resonators, such extreme optical confinement yields a factor of 106 enhancement of optomechanical coupling between the picocavity field and vibrations of individual molecular bonds. This work sets the basis for developing nanoscale nonlinear quantum optics on the single-molecule level.

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