Indirect excitons confined in an optically induced hollow-trap. The gas is confined in a 20 microns extended region and at 330 mK.

Two dimensional excitons gases

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Description of Activities:

We study experimentally spatially indirect excitons confined in semiconductor bilayer heterostructures. Thus, we impose a spatial separation between electrons and holes constituting excitons. In this configuration, excitons exhibit both a long lifetime and a large and well oriented electric dipole. These offer a unique route to bring ultracold gases in the quantum regime. The main goal of our studies is to explore the quantum phases that can be realized with indirect excitons at sub-Kelvin temperatures. For that we employ time and spatially resolved micro-photoluminescence.

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