抄録
We demonstrate control of the confined-state energies of semiconductor quantum dots (QDs) grown on prepatterned substrates. The InGaAsAlGaAs QDs self-order at the apex of self-limiting, inverted pyramids whose locations are fixed by lithography. The confinement energy in the dots is systematically varied across the substrate by changing the pattern of the pyramid array in their vicinity. The resulting energy- and site-controlled QDs show systematic and reproducible shifts of their emission wavelengths as well as antibunched photon emissions from confined single excitons. Such QDs should be useful for applications in quantum information processing and quantum communication devices, e.g., multiple-wavelength single-photon emitters.
本文言語 | English |
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論文番号 | 243105 |
ページ(範囲) | 1-3 |
ページ数 | 3 |
ジャーナル | Applied Physics Letters |
巻 | 86 |
号 | 24 |
DOI | |
出版ステータス | Published - 2005 6月 13 |
外部発表 | はい |
ASJC Scopus subject areas
- 物理学および天文学(その他)