Bulletin of the American Physical Society
APS March Meeting 2014
Volume 59, Number 1
Monday–Friday, March 3–7, 2014; Denver, Colorado
Session G50: Focus Session: Plasmon Enhanced Light: Matter Interactions
11:15 AM–2:15 PM,
Tuesday, March 4, 2014
Room: Mile High Ballroom 1D
Sponsoring
Unit:
DMP
Chair: Xiaoqin (Elaine) Li, University of Texas at Austin
Abstract ID: BAPS.2014.MAR.G50.1
Abstract: G50.00001 : Metal Nanostructure-Multiexciton Interactions: From Emission Enhancement to Modification of Photon Statistics
11:15 AM–11:51 AM
Preview Abstract
Abstract
Author:
Han Htoon
(Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory)
In the past decade, a tremendous amount of research efforts has been invested in the study of metal nanostructure (NM)-nanoemitter interactions. However, most of these studies have been conducted in the context of MNs interacting with single excitons. In contrast to these studies, we ventured into the realm of multi-exciton-MN interactions by performing low temperature photoluminescence (low-T PL) and photon-correlation spectroscopy studies on individual core/ultra-thick-shell NQDs (``giant''-NQDs or g-NQDs) deposited on nano-roughened silver films. Our low-T PL study show that (1) the multiexciton (MX) emissions in g-NQD coupled to silver films were enhanced mainly through the direct modification on the competition between the radiative and nonradiative recombination processes of MXs; and (2) strong enhancement in absorption is not necessary for a strong multiexciton emission.\footnote{\textit{J. Phys. Chem. Letts.} \textbf{4}, 1465-1470, (2013).} Our room temperature photon-correlation spectroscopy studies reveal that the MN-g-NQD interaction can transform sub-Poissonian photon emission statistics of individual g-NQDs to strong super-Poissonian statistics (photon-bunching).\footnote{\textit{Phys. Rev. Lett.} \textbf{110}, 117401, (2013).} We further derived the conditions required for the manifestation of this phenomenon and show that it can also manifest in other nanoemitters such as epitaxially grown QDs and single walled carbon nanotubes. The understandings attained in this work could open a new plasmonic route for manipulation of important multiexciton processes such as optical amplification, lasing and entangled-photon-pair generation.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.MAR.G50.1
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2018 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
1 Research Road, Ridge, NY 11961-2701
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700