期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 14, 页码 3172-3175出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.3172
关键词
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Single-photon interference is observed on the ultranarrow long-term stable exciton resonance of an individual semiconductor quantum dot. This interference is related to the fine-structure splitting and allows direct conclusions about the coherence properties of the exciton. When selectively addressing a particular dot by quasiresonant phonon-assisted excitation, despite a rapid orientation relaxation on a I-ps time scale, coherence is partly maintained. No significant further decoherence occurs when the ground state is reached until the exciton recombines radiatively (approximate to 300 ps).
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