Observation of interdot correlation in single pair of electromagnetically coupled quantum dots

Shohgo Yamauchi; Kazuhiro Komori; Isao Morohashi; Keishiro Goshima; Takeyoshi Sugaya; Toshihide Takagahara

doi:10.1063/1.2120910

Observation of interdot correlation in single pair of electromagnetically coupled quantum dots

Shohgo Yamauchi, Kazuhiro Komori, Isao Morohashi, Keishiro Goshima, Takeyoshi Sugaya, Toshihide Takagahara

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The interdot correlation in a single pair of InAsGaAs barrier-coupled quantum dots (QDs) is investigated by microphotoluminescence spectroscopy, in which each QD is individually excited at unique energy levels. Surprisingly, we observe an anomalous increase in the luminescence intensity when the two QDs are excited simultaneously. This remarkable finding can be interpreted in terms of the electromagnetic coupling between QDs with thick barrier layers.

Original language	English
Article number	182103
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	87
Issue number	18
DOIs	https://doi.org/10.1063/1.2120910
Publication status	Published - 2005 Oct 31
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "The interdot correlation in a single pair of InAsGaAs barrier-coupled quantum dots (QDs) is investigated by microphotoluminescence spectroscopy, in which each QD is individually excited at unique energy levels. Surprisingly, we observe an anomalous increase in the luminescence intensity when the two QDs are excited simultaneously. This remarkable finding can be interpreted in terms of the electromagnetic coupling between QDs with thick barrier layers.",

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AU - Yamauchi, Shohgo

AU - Komori, Kazuhiro

AU - Morohashi, Isao

AU - Goshima, Keishiro

AU - Sugaya, Takeyoshi

AU - Takagahara, Toshihide

PY - 2005/10/31

Y1 - 2005/10/31

N2 - The interdot correlation in a single pair of InAsGaAs barrier-coupled quantum dots (QDs) is investigated by microphotoluminescence spectroscopy, in which each QD is individually excited at unique energy levels. Surprisingly, we observe an anomalous increase in the luminescence intensity when the two QDs are excited simultaneously. This remarkable finding can be interpreted in terms of the electromagnetic coupling between QDs with thick barrier layers.

AB - The interdot correlation in a single pair of InAsGaAs barrier-coupled quantum dots (QDs) is investigated by microphotoluminescence spectroscopy, in which each QD is individually excited at unique energy levels. Surprisingly, we observe an anomalous increase in the luminescence intensity when the two QDs are excited simultaneously. This remarkable finding can be interpreted in terms of the electromagnetic coupling between QDs with thick barrier layers.

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Observation of interdot correlation in single pair of electromagnetically coupled quantum dots

Abstract

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