Semiconductor Double Quantum Dot (IMAGE) Princeton University Caption This is a double quantum dot as imaged by a scanning electron microscope. Current flows one electron at a time through two quantum dots (red circles) that are formed in an indium arsenide nanowire. Credit Science/AAAS Usage Restrictions Science/AAAS License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.