Architecture of a quantum multicomputer implementing Shor's algorithm

Rodney Van Meter, W. J. Munro, Kae Nemoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


We have created the architecture of a quantum multicomputer and analyzed its performance for running Shor's algorithm for factoring large numbers. In this paper, we combine fault tolerance techniques with performance goals for our architecture, which uses a linear interconnect and six logical qubits per node. Our performance target of factoring a 1,024-bit number in one month requires teleporting 6.2 logical qubits per second on each link in the system, which translates to 3,300 physical teleportations per second on each link. Starting from a Bell state with fidelity F∈=∈0.638, as a qubus-based cavity QED interconnect might generate with a qubit-to-qubit loss of 3.4dB, about 1.5 million physical entanglement attempts per second are enough to reach this level of performance. Our analysis suggests that systems capable of solving classically intractable problems are well within reach; once basic technological hurdles are overcome, the multicomputer architecture supports rapid scaling to very large systems.

Original languageEnglish
Title of host publicationTheory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers
PublisherSpringer Verlag
Number of pages10
ISBN (Print)3540893032, 9783540893035
Publication statusPublished - 2008
Event3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008 - Tokyo, Japan
Duration: 2008 Jan 302008 Feb 1

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5106 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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