Direct Optical Excitation of Quantum-Degenerate Exciton States in Semiconductors

Details Direct Optical Excitation of Quantum-Degenerate Exciton States in Semiconductors Direct Optical Excitation of Quantum-Degenerate Exciton States in Semiconductors

2004-08-20

arxiv.org/abs/cond-mat/0408453v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 4 figures

Scientific paper

Quantum electrodynamic calculations predict that truly incoherent light can be used to efficiently generate quantum-degenerate exciton population states. Resonant incoherent excitation directly converts photons into excitons with vanishing center of mass momentum. The populated exciton state possesses long-range order, is very stable against perturbations, and should be observable via its unusual directional and density dependence in luminescence measurements.

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