title: Experimental demonstration of decoherence-free one-way information transfer.
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.
authors.affiliation: Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria.
authors.forename: R
authors.initials: R
authors.lastname: Prevedel
authors.forename: M S
authors.initials: MS
authors.lastname: Tame
authors.forename: A
authors.initials: A
authors.lastname: Stefanov
authors.forename: M
authors.initials: M
authors.lastname: Paternostro
authors.forename: M S
authors.initials: MS
authors.lastname: Kim
authors.forename: A
authors.initials: A
authors.lastname: Zeilinger