Many modern technological advances and devices are based on understanding quantum mechanics. Compared to semiconductors, hard disk drives or lasers, quantum devices are different in the sense that they directly harness quantum states. A big goal of the field is to develop a working quantum computer theorized to outperform traditional computers in certain difficult computational tasks. Researchers at the University of Oulu and Aalto University have published a review article about physics related to quantum devices in Reports on Progress in Physics.