Distributed quantum computation architecture using semiconductor nanophotonics

Rodney D Van Meter, Thaddeus D. Ladd, Austin G. Fowler, Yoshihisa Yamamoto

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

In a large-scale quantum computer, the cost of communications will dominate the performance and resource requirements, place many severe demands on the technology, and constrain the architecture. Unfortunately, fault-tolerant computers based entirely on photons with probabilistic gates, though equipped with "built-in" communication, have very large resource overheads; likewise, computers with reliable probabilistic gates between photons or quantum memories may lack sufficient communication resources in the presence of realistic optical losses. Here, we consider a compromise architecture, in which semiconductor spin qubits are coupled by bright laser pulses through nanophotonic waveguides and cavities using a combination of frequent probabilistic and sparse determinstic entanglement mechanisms. The large photonic resource requirements incurred by the use of probabilistic gates for quantum communication are mitigated in part by the potential high-speed operation of the semiconductor nanophotonic hardware. The system employs topological cluster-state quantum error correction for achieving fault-tolerance. Our results suggest that such an architecture/technology combination has the potential to scale to a system capable of attacking classically intractable computational problems.

Original languageEnglish
Pages (from-to)295-323
Number of pages29
JournalInternational Journal of Quantum Information
Volume8
Issue number1-2
DOIs
Publication statusPublished - 2010 Feb

Fingerprint

quantum computation
resources
communication
fault tolerance
requirements
quantum communication
quantum computers
photons
hardware
high speed
photonics
waveguides
costs
cavities
pulses
lasers

Keywords

  • Distributed quantum computation
  • Nanophotonics
  • Quantum multicomputer
  • Topological fault tolerance

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Distributed quantum computation architecture using semiconductor nanophotonics. / Van Meter, Rodney D; Ladd, Thaddeus D.; Fowler, Austin G.; Yamamoto, Yoshihisa.

In: International Journal of Quantum Information, Vol. 8, No. 1-2, 02.2010, p. 295-323.

Research output: Contribution to journalArticle

Van Meter, Rodney D ; Ladd, Thaddeus D. ; Fowler, Austin G. ; Yamamoto, Yoshihisa. / Distributed quantum computation architecture using semiconductor nanophotonics. In: International Journal of Quantum Information. 2010 ; Vol. 8, No. 1-2. pp. 295-323.
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