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Single Molecule Nonlinearity in a Plasmonic Waveguide

Title data

Schörner, Christian ; Lippitz, Markus:
Single Molecule Nonlinearity in a Plasmonic Waveguide.
In: Nano Letters. Vol. 20 (February 2020) Issue 3 . - pp. 2152-2156.
ISSN 1530-6992
DOI: https://doi.org/10.1021/acs.nanolett.0c00196

Abstract in another language

Plasmonic waveguides offer the unique possibility to confine light far below the diffraction limit. Past room temperature experiments focused on efficient generation of single waveguide plasmons by a quantum emitter. However, only the simultaneous interaction of the emitter with multiple plasmonic fields would lead to functionality in a plasmonic circuit. Here, we demonstrate the nonlinear optical interaction of a single molecule and propagating plasmons. An individual terrylene diimide (TDI) molecule is placed in the nanogap between two single-crystalline silver nanowires. A visible wavelength pump pulse and a red-shifted depletion pulse travel along the waveguide, leading to stimulated emission depletion (STED) in the observed fluorescence. The efficiency increases by up to a factor of 50 compared to far-field excitation. Our study thus demonstrates remote nonlinear four-wave mixing at a single molecule with propagating plasmons. It paves the way toward functional quantum plasmonic circuits and improved nonlinear single-molecule spectroscopy.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: plasmonic nanocircuit; quantum emitter; single-crystalline silver flake; two-wire transmission line; stimulated emission depletion STED; nonlinear optics
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics III - Nanooptics > Chair Experimental Physics III - Nanooptics - Univ.-Prof. Dr. Markus Lippitz
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 16 Apr 2020 06:51
Last Modified: 16 Apr 2020 06:51
URI: https://eref.uni-bayreuth.de/id/eprint/54640