Scalable architecture for solid state quantum computation

Solid state approaches to quantum computation offer intriguing prospects for large scale integration and long term stability. Most of the current approaches restrict the computation to nearest-neighbors interactions. This condition generally decreases thresholds for fault tolerant computation. We explore the prospects for improving the scalability of solid-state quantum computation schemes via cavity QED on chip or long range transport of electron spin, and consider analogies between solid-state computation and scalable architectures for ion-based computation. Specifically we investigate dominant sources of errors in electron spin transport and study techniques to purify and correct these errors. Finally, we discuss several approaches for long-lived storage of electronic spin qubits and investigate novel architectures that utilize these resources for scalable quantum computation.