Graphene plasmons vs noble metal nanoparticles

Graphene nanoislands shown to host record-high levels of nonlinear response when electrically charged.

Nonlinear optical phenomena arise from the coupling between photons facilitated by their interaction with matter, and enable frequency conversion and all-optical switching effects. Unfortunately, the efficiencies of these processes are typically poor due to the low nonlinear response associated with conventional materials. Noble metal nanoparticles can help overcome this limitation on the nanoscale, as they enhance optical nonlinearities through strong electromagnetic field concentration provided by localized plasmons. Due to plasmonic enhancement, noble metal nanoparticles have demonstrated nonlinear frequency conversion with the highest recorded efficiencies per volume, and are generally regarded as the best available nonlinear nanomaterials.

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ERC Starting Grant Awarded to Prof Darrick Chang

Starting Grant funding supports young researchers to establish themselves as independent research leaders.

ICFO  Group Leader Professor Darrick Chang, has been awarded a European Research Council Starting Grant to pursue the project “Frontiers of Quantum Atom-Light Interactions (FoQAL)”. This projects aims to completely re-define our ability to control light-matter interactions at the quantum level. This potential revolution will make use of cold atoms interfaced with nanophotonic systems, exploiting unique features such as control over the dimensionality and dispersion of light, the engineering of quantum vacuum forces, and strong optical fields and forces associated with light confined to the nanoscale. It seeks to develop powerful and fundamentally new paradigms for atomic trapping, tailoring atomic interactions, and quantum nonlinear optics, which cannot be duplicated in macroscopic systems even in principle.

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Interfacing cold atoms and nanophotonics - Darrick Chang, Assistant Professor (ICFO), Nest Fellow

Coupling atoms to an integrated photonic crystal circuit in Nature Communications.

ICFO Professor and Nest Fellow Darrick Chang, in collaboration with researchers from Caltech, has co-authored a paper in Nature Communications which demonstrates for the first time a photonic crystal device simultaneously capable of trapping and strongly coupling to cold atoms.

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Kick-off Meeting

GRASP was officially launched on January 21, 2014, in a Kick-off meeting held in Barcelona at the Institute of Photonic Sciences. Each partner presented an overview of their group expertise, research activities and role in the project, as well as the tasks, milestones and deliverables expected in each Work Package.
The meeting provided an opportunity for the partners to exchange views and expertise, and created a strong platform for future collaboration and the exchange of knowledge and devices.

 

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