Shrinking light to allow forbidden transitions on the atomic scale

Author:

Rivera Nicholas1,Kaminer Ido1,Zhen Bo2,Joannopoulos John D.1,Soljačić Marin1

Affiliation:

1. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

2. Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Abstract

Making the forbidden allowed Spontaneous emission, in which an excited electron lowers its energy by emitting a photon, is a fundamental process in light-matter interactions. In principle, the electron can relax from the excited state to any unoccupied lower energy level. In practice, however, most of these transitions are too slow and so are effectively forbidden. Rivera et al. show theoretically that the plasmonic excitations associated with two-dimensional materials can be used to enhance and control the light-matter interaction. Transitions that were once considered forbidden can thus be accessed, opening up the entire spectrum of an optical emitter. Science , this issue p. 263

Funder

U.S. Department of Energy

Marie Curie

Army Research Office

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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