Experimental investigation of a two-qubit decoherence-free subspace

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

doi:10.1103/PhysRevLett.92.147901

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 journal › Article › peer-review

Abstract

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 language	English (US)
Article number	147901
Pages (from-to)	147901-1-147901-4
Journal	Physical review letters
Volume	92
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.92.147901
State	Published - Apr 9 2004

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Physics and Astronomy(all)

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10.1103/PhysRevLett.92.147901

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abstract = "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.",

author = "Altepeter, {J. B.} and Hadley, {P. G.} and Wendelken, {S. M.} and Berglund, {A. J.} and Kwiat, {P. G.}",

note = "Funding Information: We acknowledge support from the National Security Agency (NSA) and the Advanced Research and Development Activity (ARDA). Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

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AU - Berglund, A. J.

AU - Kwiat, P. G.

N1 - Funding Information: We acknowledge support from the National Security Agency (NSA) and the Advanced Research and Development Activity (ARDA). Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

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N2 - 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.

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Experimental investigation of a two-qubit decoherence-free subspace

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