Oxford University physicists are simulating the strange, probabilistic world of quantum mechanics, opening the door to new innovations for superconductors, materials science, and quantum technologies and their work has been published in Nature Communications. Quantum systems can be notoriously hard to simulate because they don’t behave like the physical systems we experience day to day. In the classical world, if the starting conditions of a system are precisely the same each time, then the final result will be the same. But in quantum mechanics, particles can exist in more than one state at once. This means that simulating a quantum system in general does not give you a definite outcome: instead, it gives you a spread of probabilities for the different things that may happen.