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2003 | 104 | 3-4 | 281-287
Article title

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

Content
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Languages of publication
EN
Abstracts
EN
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.
Keywords
EN
Year
Volume
104
Issue
3-4
Pages
281-287
Physical description
Dates
published
2003-09/10
received
2003-07-16
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv104n312kz
Identifiers
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