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Applied Physics Letters / Volume 92 / Issue 4 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 92, 041915 (2008); http://dx.doi.org/10.1063/1.2839615 (3 pages)

Discrimination of quantum dots using an optically created nuclear field

H. Sasakura1, R. Kaji2, S. Adachi2, and S. Muto2

1CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
2Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan

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(Received 4 December 2007; accepted 14 January 2008; published online 1 February 2008)

We investigated an optically created nuclear field in a single InAlAs quantum dot and demonstrated that the nuclear field can be used to discriminate whether photoluminescence lines originate from the same dot or a different dot. Since the nonlinear response of the nuclear field is sensitive to the electron g factor and correlation time of a coupled electron-nuclear spin system, the resultant Overhauser shift is their good measure for individual quantum dots. This method provides a simple and convenient alternative to the standard photon cross-correlation method.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

aluminium compounds, g-factor, III-V semiconductors, indium compounds, photoluminescence, semiconductor quantum dots

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2839615

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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