METHOD FOR QUANTUM COMPUTING

摘要

The present invention provides a new method for quantum computing that is based on the following ideas. The inventors have demonstrated that an entangled resource state, including in particular a class of highly entangled multi-particle states, the so-called "cluster states", can serve as a quantum computer. Such resource states can e.g. be implemented with ultracold atoms in optical lattices or similar systems. It is shown how a universal set of quantum gates, the CNOT gate and arbitrary one-system rotations, can be implemented by performing one-system measurements only. Further, a way of quantum information processing beyond the network scheme is provided.