Ultraefficient coupling of a quantum emitter to the tunable guided plasmons of a carbon nanotube

Martín-Moreno, Luis; García de Abajo, F. Javier; García-Vidal, Francisco J.

UAM_Biblioteca

Author

Martín-Moreno, Luis; García de Abajo, F. Javier; García-Vidal, Francisco J.

Entity

UAM. Departamento de Física Teórica de la Materia Condensada

Publisher

American Physical Society

Date

2015-10-20

Citation

Physical Review Letters 115.17 (2015): 173601

ISSN

0031-9007 (print); 1079-7114 (online)

DOI

10.1103/PhysRevLett.115.173601

Funded by

This work is partially supported by the European Commission (Graphene Flagship CNECT-ICT-604391 and FP7-ICT-2013-613024-GRASP), by the European Research Council (ERC-2011-AdG Proposal No. 290981), and by the Spanish Ministerio de Economía y Competitividad under Contracts No.MAT2014-53432-C5 and MAT2014-59096-P

Project

info:eu-repo/grantAgreement/EC/FP7/604391; info:eu-repo/grantAgreement/EC/FP7/613024; info:eu-repo/grantAgreement/EC/FP7/290981; Gobierno de España. MAT2014-59096-P; Gobierno de España. MAT2014-53432-C5

Editor's Version

http://dx.doi.org/10.1103/PhysRevLett.115.173601

Subjects

Carbon nanotubes; Plasmons; Coupling efficiency; Micrometer scale; Single quantum emitter; Ultra-efficient; Física

URI

http://hdl.handle.net/10486/674137

Rights

Abstract

We show that a single quantum emitter can efficiently couple to the tunable plasmons of a highly doped single-wall carbon nanotube (SWCNT). Plasmons in these quasi-one-dimensional carbon structures exhibit deep subwavelength confinement that pushes the coupling efficiency close to 100% over a very broad spectral range. This phenomenon takes place for distances and tube diameters comprising the nanometer and micrometer scales. In particular, we find a β factor ≈1 for QEs placed 1-100 nm away from SWCNTs that are just a few nanometers in diameter, while the corresponding Purcell factor exceeds 106

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