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Probing plasmon-NV$^0$ coupling at the nanometer scale with photons and fast electrons
- Source :
- Hugo Lourenco-Martins, et al, ACS Photonics, 5, 324 (2018)
- Publication Year :
- 2019
-
Abstract
- The local density of optical states governs an emitters lifetime and quantum yield through the Purcell effect. It can be modified by a surface plasmon electromagnetic field, but such a field has a spatial extension limited to a few hundreds of nanometers, which complicates the use of optical methods to spatially probe the emitter-plasmon coupling. Here we show that a combination of electron-based imaging, spectroscopies and photon-based correlation spectroscopy enables measurement of the Purcell effect with nanometer and nanosecond spatio-temporal resolutions. Due to the large variability of radiative lifetimes of emitters embedded in nanoparticles with inhomogeneous sizes we relied on a statistical approach to unambiguously probe the coupling between nitrogen-vacancy centers (NV^0) in nanodiamonds and surface plasmons in silver nanocubes. We quantified the Purcell effect by measuring the NV^0 excited state lifetimes in a large number of either isolated nanodiamonds or nanodiamond-nanocube dimers and demonstrated a statistically significant lifetime reduction for dimers.
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Physics - Optics
Subjects
Details
- Database :
- arXiv
- Journal :
- Hugo Lourenco-Martins, et al, ACS Photonics, 5, 324 (2018)
- Publication Type :
- Report
- Accession number :
- edsarx.1906.00388
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1021/acsphotonics.7b01093