This article is cited in 15 papers

Superradiance

Superradiance of several atoms near a metal nanosphere

I. E. Protsenko^abc, A. V. Uskov<sup>ac

a</sup> P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
^b National Engineering Physics Institute "MEPhI", Moscow
^c Advanced Energy Technologies Ltd., Moscow

Abstract: Assuming that the number of emitters (atoms) near a spherical metal nanoparticle is large (more than a few hundred), so that their interaction with each other is strong and sufficient for the emergence of their collective states (Dicke states), it is shown that the nanoparticle accelerates the superradiance of the emitters in a similar way as it accelerates the spontaneous emission of a single emitter. In this case, part of the energy stored by the emitters is absorbed by a nanoparticle, and the rest of the energy is radiated as a superradiance pulse. For the parameters selected in this paper, the energy absorbed by the nanoparticle is approximately equal to the emitted energy. We have found the collective states of the emitters and nanoparticle and have derived expressions for the time dependence of the superradiance pulse power, pulse duration and time delay with respect to the moment of excitation of the emitters.

Keywords: metal nanosphere, localised plasmon resonance, collective spontaneous emission.

PACS: 42.50.Ct, 78.67.-n

Received: 21.09.2014
Revised: 27.11.2014

 English version: Quantum Electronics, 2015, 45:6, 561–572

Bibliographic databases:

• 
• 
•