Experimental Demonstration of Decoherence-Free One-Way Information Transfer

R. Prevedel, M. S. Tame, A. Stefanov, M. Paternostro, M. S. Kim, and A. Zeilinger
Phys. Rev. Lett. 99, 250503 – Published 19 December 2007

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 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.

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  • Received 10 August 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.250503

©2007 American Physical Society

Authors & Affiliations

R. Prevedel1, M. S. Tame2, A. Stefanov1,3, M. Paternostro2, M. S. Kim2, and A. Zeilinger1,3

  • 1Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
  • 2School of Mathematics and Physics, The Queen’s University, Belfast, BT7 1NN, United Kingdom
  • 3Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria

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Vol. 99, Iss. 25 — 21 December 2007

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