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Selective confinement of macroscopic long-lifetime exciton and trion populations

Fraser, Michael; Jagadish, Chennupati; Tan, Hark Hoe


Confinement of cold macroscopic particle ensembles opens avenues to study many-body coherent states of matter in a controlled environment. We create pure macroscopic cold long-lifetime trion and exciton gases and arbitrary mixtures spatially confined with fabricated electrostatic potentials on GaAs/AlGaAs coupled quantum well structures. The population densities are readily controlled by electric field and laser power. In the exciton phase, we observe a strong contraction of the exciton mode...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Physical Review B
DOI: 10.1103/PhysRevB.84.245318
Access Rights: Open Access


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