Title
Anti-Parallel Dipole Coupling Of Quantum Dots Via An Optical Near-Field Interaction
Abstract
We observed the optically forbidden energy transfer between cubic CuCl quantum dots coupled via an optical near-field interaction using time-resolved near-field photoluminescence (PL) spectroscopy. The energy transfer time and exciton lifetime were estimated from the rise and decay times of the PL pump-probe signal, respectively. We found that the exciton lifetime increased as the energy transfer time fell. This result strongly supports the notion that near-field interaction between QD makes the anti-parallel dipole coupling. Namely, a quantum-dots pair coupled by an optical near field has a long exciton lifetime which indicates the antiparallel coupling of QDs forming a weakly radiative quadrupole state.
Year
DOI
Venue
2005
10.1093/ietele/e88-c.9.1845
IEICE TRANSACTIONS ON ELECTRONICS
Keywords
Field
DocType
optical near-field interaction, anti-parallel electric dipole pair, near-field spectroscopy, coupled quantum dots
Biexciton,Exciton,Quadrupole,Optics,Radiative transfer,Electric dipole moment,Dipole,Quantum dot,Photoluminescence,Physics
Journal
Volume
Issue
ISSN
E88C
9
1745-1353
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Tadashi Kawazoe133.36
Kiyoshi Kobayashi262.72
ohtsu386.37