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A method for characterizing coherent-state quantum gates

Abstract : We discuss and implement experimentally a method for characterizing quantum gates operating on superpositions of coherent states. The peculiarity of this encoding of qubits is to work with a non-orthogonal basis, and therefore some technical limitations prevent us from using standard methods, such as process tomography. We adopt a different technique, that relies on some a-priori knowledge about the physics underlying the functioning of the device. A parameter characterizing the global quality of the quantum gate is obtained by \virtually" processing an entangled state.
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Preprints, Working Papers, ...
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https://hal-iogs.archives-ouvertes.fr/hal-00596778
Contributor : Marco Barbieri Connect in order to contact the contributor
Submitted on : Monday, May 30, 2011 - 10:44:02 AM
Last modification on : Wednesday, September 16, 2020 - 5:43:25 PM

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  • HAL Id : hal-00596778, version 1
  • ARXIV : 1105.5510

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Rémi Blandino, Franck Ferreyrol, Marco Barbieri, Philippe Grangier, Rosa Tualle-Brouri. A method for characterizing coherent-state quantum gates. 2011. ⟨hal-00596778⟩

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