Two-dimensional snowflake trap for indirect excitons

Opt Lett. 2015 Feb 15;40(4):589-92. doi: 10.1364/OL.40.000589.

Abstract

We present experimental proof of principle for two-dimensional electrostatic traps for indirect excitons. A confining trap potential for indirect excitons is created by a snowflake-shaped electrode pattern. We demonstrate collection of indirect excitons from all directions to the trap center and control of the trap potential by voltage.