Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 281-287 |
| Number of pages | 7 |
| Journal | Acta Physica Polonica A |
| Volume | 104 |
| Issue number | 3 |
| Publication status | Published - 2003 Sep |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
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.
In: Acta Physica Polonica A, Vol. 104, No. 3, 09.2003, p. 281-287.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Real-Space Mapping of Exciton Wave Functions in a Quantum Dot with Near-Field Optical Imaging Spectroscopy
AU - Saiki, T.
AU - Matsuda, K.
AU - Nomura, S.
AU - Mihara, M.
AU - Aoyagi, Y.
AU - Nair, S.
AU - Takagahara, Toshihide
PY - 2003/9
Y1 - 2003/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0346368579&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0346368579&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0346368579
VL - 104
SP - 281
EP - 287
JO - Acta Physica Polonica A
JF - Acta Physica Polonica A
SN - 0587-4246
IS - 3
ER -