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Nature 453, 294-295 (15 May 2008) | doi:10.1038/453294a; Published online 14 May 2008

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Quantum information: An integrated light circuit

Paul G. Kwiat1

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There's a long wish list for a workable quantum computer: a viable system must be fast, compact and stable. The first integrated optical quantum logic circuits are a step in the right direction.

Systems that use photons are one of several candidates for making a working quantum computer. One challenge (there are many) is to move beyond the current bulky experiments that involve just a few photons to the kind of stable, miniaturized circuits with very many logic gates that lie at the heart of conventional, classical computers.

  1. Paul G. Kwiat is in the Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801, USA.
    Email: kwiat@uiuc.edu

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