Semiconductor quantum dot - a quantum light source of multicolor photons with tunable statistics

Details Semiconductor quantum dot - a quantum light source of multicolor photons with tunable statistics Semiconductor quantum dot - a quantum light source of multicolor photons with tunable statistics

2001-07-25

arxiv.org/abs/cond-mat/0107520v1

Phys.Rev.Lett 87, 257401 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.87.257401

We investigate the intensity correlation properties of single photons emitted from an optically excited single semiconductor quantum dot. The second order temporal coherence function of the photons emitted at various wavelengths is measured as a function of the excitation power. We show experimentally and theoretically, for the first time, that a quantum dot is not only a source of correlated non-classical monochromatic photons but is also a source of correlated non-classical \emph{multicolor} photons with tunable correlation properties. We found that the emitted photon statistics can be varied by the excitation rate from a sub-Poissonian one, where the photons are temporally antibunched, to super-Poissonian, where they are temporally bunched.

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