Quantum entanglement (IMAGE) Vienna University of Technology Caption An atom is hit by a laser pulse. One electron is ripped out of the atom, another electron is shifted into a state with higher energy. Credit TU Wien Usage Restrictions none License Original 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.