High-speed linear optics quantum computing using active feed-forward

Robert Prevedel (), Philip Walther, Felix Tiefenbacher, Pascal Böhi, Rainer Kaltenbaek, Thomas Jennewein and Anton Zeilinger ()
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Robert Prevedel: University of Vienna
Philip Walther: University of Vienna
Felix Tiefenbacher: University of Vienna
Pascal Böhi: University of Vienna
Rainer Kaltenbaek: University of Vienna
Thomas Jennewein: Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences
Anton Zeilinger: University of Vienna

Nature, 2007, vol. 445, issue 7123, 65-69

Abstract: Computing: the right stuff Until now experimental proof-of-principle demonstrations of optical quantum computers have been probabilistic: that is, the computation succeeds in only a small fraction of runs. Exploiting a computer architecture called one-way quantum computation, Prevedel et al. have now succeeded in undoing emergent errors by 'feed-forwarding' those events and applying error correction in real time. In effect the quantum computer is forced to produce the right result when the 'compute' button is pressed. This experimental demonstration of one-way quantum computation could be a key result for the future development of these systems.

Date: 2007
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DOI: 10.1038/nature05346

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