Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy

T. Saiki, K. Matsuda, S. Nomura, M. Mihara, Y. Aoyagi, S. Nair, Toshihide Takagahara

研究成果: Article

抄録

An exciton confined within a quantum dot acts as a two-level quantum system, and is one of the most promising candidates for quantum computing and quantum information processing. The real-space optical probing of the quantum eigenstates in a single quantum dot and coupled quantum dots should be developed toward the realization of quantum photonic devices, where their wave functions are dynamically controlled by coherent optical techniques. Here we apply near-field photoluminescence imaging spectroscopy with a high spatial resolution of 30 nm to map out the centre-of-mass wave function of an exciton confined in a GaAs quantum dot. The spatial profile of the exciton emission, which reflects the shape of a monolayer-high island, differs from that of biexciton emission, due to different distributions of the polarization field for the exciton and biexciton recombinations.

元の言語English
ページ(範囲)281-287
ページ数7
ジャーナルActa Physica Polonica A
104
発行部数3
出版物ステータスPublished - 2003 9
外部発表Yes

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near fields
quantum dots
excitons
wave functions
spectroscopy
quantum computation
center of mass
eigenvectors
spatial resolution
photonics
photoluminescence
high resolution
polarization
profiles

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

Saiki, T., Matsuda, K., Nomura, S., Mihara, M., Aoyagi, Y., Nair, S., & Takagahara, T. (2003). Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy. Acta Physica Polonica A, 104(3), 281-287.

Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy. / Saiki, T.; Matsuda, K.; Nomura, S.; Mihara, M.; Aoyagi, Y.; Nair, S.; Takagahara, Toshihide.

:: Acta Physica Polonica A, 巻 104, 番号 3, 09.2003, p. 281-287.

研究成果: Article

Saiki, T, Matsuda, K, Nomura, S, Mihara, M, Aoyagi, Y, Nair, S & Takagahara, T 2003, 'Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy', Acta Physica Polonica A, 巻. 104, 番号 3, pp. 281-287.
Saiki T, Matsuda K, Nomura S, Mihara M, Aoyagi Y, Nair S その他. Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy. Acta Physica Polonica A. 2003 9;104(3):281-287.
Saiki, T. ; Matsuda, K. ; Nomura, S. ; Mihara, M. ; Aoyagi, Y. ; Nair, S. ; Takagahara, Toshihide. / Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy. :: Acta Physica Polonica A. 2003 ; 巻 104, 番号 3. pp. 281-287.
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