Quantum Dot (IMAGE) University of Copenhagen - Niels Bohr Institute Caption In a quantum dot, there are both negatively charged particles and positively charged particles that are missing electrons (also referred to as holes). The attraction between the electron and hole creates a new quantum state with a very strong light-matter interaction and a corresponding quick release of light. Credit Quantum Photonics Group, Niels Bohr Institute Usage Restrictions Quantum Photonics Group, Niels Bohr Institute 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.