Experimental demonstration of decoherence-free one-way information transfer |
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Authors: | Prevedel R Tame M S Stefanov A Paternostro M Kim M S Zeilinger A |
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Institution: | Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria. |
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Abstract: | We report the experimental demonstration of a one-way quantum protocol reliably operating in the presence of decoherence. Information is protected by designing an appropriate decoherence-free sub-space for a cluster state resource. We demonstrate our scheme in an all-optical setup, encoding the information into the polarization states of four photons. A measurement-based one-way information-transfer protocol is performed with the photons exposed to severe symmetric phase-damping noise. Remarkable protection of information is accomplished, delivering nearly ideal outcomes. |
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