Optical quantum computing

Research output: Contribution to journalReview article

493 Citations (Scopus)

Abstract

In 2001, all-optical quantum computing became feasible with the discovery that scalable quantum computing is possible using only single-photon sources, linear optical elements, and single-photon detectors. Although it was in principle scalable, the massive resource overhead made the scheme practically daunting. However, several simplifications were followed by proof-of-principle demonstrations, and recent approaches based on cluster states or error encoding have dramatically reduced this worrying resource overhead, making an all-optical architecture a serious contender for the ultimate goal of a large-scale quantum computer. Key challenges will be the realization of high-efficiency sources of indistinguishable single photons, low-loss, scalable optical circuits, high-efficiency single-photon detectors, and low-loss interfacing of these components.

Original languageEnglish
Pages (from-to)1567-1570
Number of pages4
JournalScience
Volume318
Issue number5856
DOIs
Publication statusPublished - 7 Dec 2007
Externally publishedYes

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