Efficient quantum computing using coherent photon conversion

N. K. Langford (), S. Ramelow, R. Prevedel, W. J. Munro, G. J. Milburn and A. Zeilinger ()
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N. K. Langford: Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5
S. Ramelow: Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5
R. Prevedel: Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5
W. J. Munro: National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku
G. J. Milburn: Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5
A. Zeilinger: Vienna Center for Quantum Science and Technology, Faculty of Physics, University of Vienna, Boltzmanngasse 5

Nature, 2011, vol. 478, issue 7369, 360-363

Abstract: Single-photon quantum computing Single photons are excellent quantum information carriers, but current schemes for preparing, processing and measuring them are inefficient. This paper introduces a process termed coherent photon conversion that could provide a new way to generate and process complex multiquanta states for photonic quantum information applications. The new scheme is not restricted to optical systems, and could also function in optomechanical, electromechanical and superconducting systems that exhibit even stronger intrinsic nonlinearities.

Date: 2011
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DOI: 10.1038/nature10463

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