Experimental investigation of a two-qubit decoherence-free subspace

J. B. Altepeter, P. G. Hadley, S. M. Wendelken, A. J. Berglund, P. G. Kwiat

Research output: Contribution to journalArticlepeer-review


The phenomenon of decoherence-free subspace (DFS) for two-qubit systems was explored. The entangled polarization-encoded two-qubit states were decohered both collectively and noncollectively. These results characterize the basis-dependent effect of decoherence on the four Bell states. They also characterize the robustness of the DFS state against perturbations in the assumption of collective decoherence.

Original languageEnglish (US)
Article number147901
Pages (from-to)147901-1-147901-4
JournalPhysical review letters
Issue number14
StatePublished - Apr 9 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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