Quantum Architecture Research Papers

The Quantum Architecture Research Center
Paper Abstract

Toward a Scalable, Silicon-Based Quantum Computing Architecture
Dean Copsey, Mark Oskin, Francois Impens, Tzvetan Metodiev, Andrew Cross, Frederic T. Chong, Isaac L. Chuang, and John Kubiatowicz

Appears in Journal of Selected Topics in Quantum Electronics, Vol 9, No. 6, pp 1552-1569. November/December 2003.

Abstract—Advances in quantum devices have brought scalable quantum computation closer to reality. We focus on the system-level issues of how quantum devices can be brought together to form a scalable architecture. In particular, we examine promising silicon-based proposals. We discover that communication of quantum data is a critical resource in such proposals.We find that traditional techniques using quantum SWAP gates are exponentially expensive as distances increase and propose quantum

as a means to communicate data over longer distances on a chip. Furthermore, we find that realistic quantum error correction circuits use a recursive structure that benefits from using teleportation for long-distance communication. We identify a set of important architectural building blocks necessary for constructing scalable communication and computation. Finally, we explore an actual layout scheme for recursive error correction, and demonstrate the exponential growth in communication costs with levels of recursion, and that teleportation limits those costs.

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Last modified on 02/25/2004 by John Kubiatowicz.