@article {1408, title = {A Quantum Computer Architecture using Nonlocal Interactions}, journal = {Physical Review A}, volume = {67}, year = {2003}, month = {2003/5/27}, abstract = { Several authors have described the basic requirements essential to build a scalable quantum computer. Because many physical implementation schemes for quantum computing rely on nearest neighbor interactions, there is a hidden quantum communication overhead to connect distant nodes of the computer. In this paper we propose a physical solution to this problem which, together with the key building blocks, provides a pathway to a scalable quantum architecture using nonlocal interactions. Our solution involves the concept of a quantum bus that acts as a refreshable entanglement resource to connect distant memory nodes providing an architectural concept for quantum computers analogous to the von Neumann architecture for classical computers. }, doi = {10.1103/PhysRevA.67.050302}, url = {http://arxiv.org/abs/quant-ph/0301012v2}, author = {Gavin K. Brennen and Daegene Song and Carl J. Williams} }