New kind of universal quantum computers

Team around Wolfgang Lechner The team around Wolfgang Lechner ( right ): Kilian Ender, Anette Messinger and Michael Fellner ( from left ) © Erika Bettega (ParityQC) - The computing power of quantum computers is currently still very low. Increasing it is currently still proving to be a major challenge. Physicists at the University of Innsbruck now present a new architecture for a universal quantum computer that overcomes such limitations and could be the basis for building the next generation of quantum computers in the near future. In a quantum computer, quantum bits (qubits) serve as a computing unit and memory at the same time. Because quantum information cannot be copied, it cannot be stored in a memory as in a classical computer. Because of this limitation, all qubits in a quantum computer must be able to interact with each other. This is currently still a major challenge for building powerful quantum computers.