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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Abstract
Description
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 subspace 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.
Comment: 5 pages, 3 figures, RevTeX4
Keywords
Quantum Physics
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