Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/39311
Título: | Active magneto-optical control of spontaneous emission in graphene |
Autor(es): | Kort-Kamp, W. J. M. Amorim, B. Bastos, G. Pinheiro, Felipe A. Rosa, F. S. S. Peres, N. M. R. Farina, C. |
Palavras-chave: | Graphene 2D Materials |
Data: | 6-Jun-2015 |
Editora: | American Physical Society |
Revista: | Physical Review B: Condensed Matter and Materials Physics |
Resumo(s): | We investigate the spontaneous emission rate of a two-level quantum emitter near a graphene-coated substrate under the influence of an external magnetic field or strain induced pseudo-magnetic field. We demonstrate that the application of the magnetic field can substantially increase or decrease the decay rate. We show that a suppression as large as 99$\%$ in the Purcell factor is achieved even for moderate magnetic fields. The emitter's lifetime is a discontinuous function of $|{\bf B}|$, which is a direct consequence of the occurrence of discrete Landau levels in graphene. We demonstrate that, in the near-field regime, the magnetic field enables an unprecedented control of the decay pathways into which the photon/polariton can be emitted. Our findings strongly suggest that a magnetic field could act as an efficient agent for on-demand, active control of light-matter interactions in graphene at the quantum level. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/39311 |
DOI: | 10.1103/PhysRevB.92.205415 |
ISSN: | 1098-0121 |
e-ISSN: | 1550-235X |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Bruno-1506.02176.pdf | 1,21 MB | Adobe PDF | Ver/Abrir |