Experimental Demonstration of Decoherence-Free One-Way Information Transfer

Robert Prevedel, Mark S Tame, André Stefanov, Mauro Paternostro, Myungshik Kim, Anton Zeilinger

Publications: Contribution to journalArticlePeer Reviewed


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.
Original languageEnglish
Article number250503
Number of pages4
JournalPhysical Review Letters
Issue number25
Publication statusPublished - 2007

Austrian Fields of Science 2012

  • 103026 Quantum optics
  • 103025 Quantum mechanics

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