Premium
Collective effects in radiation force on movable quantum dots
Author(s) -
Iida Takuya,
Ishihara Hajime
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200671573
Subject(s) - physics , lorentz force , quantum dot , dissipative system , excitation , polarization (electrochemistry) , perpendicular , exciton polaritons , exciton , scattering , condensed matter physics , polariton , quantum mechanics , chemistry , magnetic field , geometry , mathematics
We theoretically study the resonant radiation force (RF) exerted on interacting quantum dots (QDs). For this purpose, the analytical expression of RF is derived based on the nonlocal theory and the Lorentz force equation. This explicitly shows how RF on QDs behaves under optical excitation of photomediated coupled‐states of polaritons in respective QDs confining excitons. In particular, if three QDs are aligned perpendicular to the optical axis, the negative dissipative (scattering and absorbing) force, whose direction is opposite to the light propagation direction, is exerted on the middle QD due to the phase inversion of the induced polarization in it. Furthermore, indirect attractive and repulsive forces arise between QDs at both ends via the middle QD. These effects would enable us to control the spatial dynamics of a QD‐assembly by exciting their collective modes. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)