Probing Plasmon-NV0 Coupling at the Nanometer Scale with Photons and Fast Electrons
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2017-11-13 |
| Journal | ACS Photonics |
| Authors | Hugo LourençoâMartins, Mathieu Kociak, Sophie Meuret, François Treussart, Yih Hong Lee |
| Institutions | Centre National de la Recherche Scientifique, Institute for Atomic and Molecular Physics |
| Citations | 28 |
Abstract
Section titled âAbstractâThe local density of optical states governs an emitters lifetime and quantum\nyield through the Purcell effect. It can be modified by a surface plasmon\nelectromagnetic field, but such a field has a spatial extension limited to a\nfew hundreds of nanometers, which complicates the use of optical methods to\nspatially probe the emitter-plasmon coupling. Here we show that a combination\nof electron-based imaging, spectroscopies and photon-based correlation\nspectroscopy enables measurement of the Purcell effect with nanometer and\nnanosecond spatio-temporal resolutions. Due to the large variability of\nradiative lifetimes of emitters embedded in nanoparticles with inhomogeneous\nsizes we relied on a statistical approach to unambiguously probe the coupling\nbetween nitrogen-vacancy centers (NV^0) in nanodiamonds and surface plasmons in\nsilver nanocubes. We quantified the Purcell effect by measuring the NV^0\nexcited state lifetimes in a large number of either isolated nanodiamonds or\nnanodiamond-nanocube dimers and demonstrated a statistically significant\nlifetime reduction for dimers.\n