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A Quantum Computer Architecture using Nonlocal Interactions

Gavin K. Brennen·Daegene Song·Carl J. Williams
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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.

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Gavin K. Brennen, Daegene Song, Carl J. Williams. 2003-04-23. A Quantum Computer Architecture using Nonlocal Interactions. https://doi.org/10.1103/physreva.67.050302

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