A Quantum Computer Architecture using Nonlocal Interactions

Details A Quantum Computer Architecture using Nonlocal Interactions A Quantum Computer Architecture using Nonlocal Interactions

2003-01-06

arxiv.org/abs/quant-ph/0301012v2

Physics

Quantum Physics

4 pages, 2 figures, Slight modifications to satisfy referee, 2 new references, modified acknowledgement. This draft to appear

Scientific paper

10.1103/PhysRevA.67.050302

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.

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