Quantum Computing using Atomic Beams
Ben Varcoe
University of Leeds, United Kingdom.
Abstract: Using the techniques of cluster state quantum computing, we show that a scalable quantum computer could be constructed using crossed atomic beams with interactions mitigated by microwave cavity quantum electrodynamics (QED). In a departure from the traditional understanding of a computer as a fixed array of computational elements, we show that cluster state quantum computing is well suited to atomic beam experiments and that a scalable quantum computer could be constructed using a combination of existing devices. While existing experimental parameters do not meet current thresholds for fault-tolerant computing, improvements in both the experiments and in the understanding of fault-tolerance are expected to change with further development.