Communication links for distributed quantum computation

Rodney Van Meter, Kae Nemoto, William J. Munro

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Distributed quantum computation requires quantum operations that act over a distance on error correction-encoded states of logical qubits, such as the transfer of qubits via teleportation. We evaluate the performance of several quantum error correction codes, and find that teleportation failure rates of one percent or more are tolerable when two levels of the [23,1,7] code are used. We present an analysis of performing quantum error correction (QEC) on QEC-encoded states that span two quantum computers, including the creation of distributed logical zeroes. The transfer of the individual qubits of a logical state may be multiplexed in time or space, moving serially across a single link, or in parallel across multiple links. We show that the performance and reliability penalty for using serial links is small for a broad range of physical parameters, making serial links preferable for a large, distributed quantum multicomputer when engineering difficulties are considered. Such a multicomputer will be able to factor a 1,024-bit number using Shor's algorithm with a high probability of success.

Original languageEnglish
Pages (from-to)1643-1653
Number of pages11
JournalIEEE Transactions on Computers
Volume56
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes

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Keywords

  • Communication/networking and information technology
  • Computer systems organization
  • Data communications
  • Emerging tehnologies
  • Error-checking
  • Fault tolerance
  • Hardware
  • Interconnection architectures
  • Interconnections (subsystems)
  • Multiple data stream architectures (multiprocessors)
  • Processor architectures
  • Reliability
  • Testing

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computational Theory and Mathematics

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