Distributed quantum computation architecture using semiconductor nanophotonics

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

研究成果: Article査読

76 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)295-323
ページ数29
ジャーナルInternational Journal of Quantum Information
8
1-2
DOI
出版ステータスPublished - 2010

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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