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Bound entangled states of four qubits in the tomographic-probability representation

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Journal of Russian Laser Research Aims and scope

Abstract

We discuss the entanglement phenomenon on the example of the Smolin state of four qubits. This state is known as the bound entangled state and its spin tomogram is found in an explicit form. We apply the qubit-portrait method for investigating the violation of the Bell inequalities, since this approach provides another tool to prove the entanglement properties of the four-qubit state under consideration.

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Authors and Affiliations

  1. P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii Prospect 53, Moscow, 119991, Russia

    Vladimir I. Man’ko

  2. Moscow Institute of Physics and Technology (State University), Institutskii per. 9, Dolgoprudnyi, Moscow Region, 141700, Russia

    Igor V. Traskunov

Authors
  1. Vladimir I. Man’ko
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  2. Igor V. Traskunov
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Correspondence to Igor V. Traskunov.

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Man’ko, V.I., Traskunov, I.V. Bound entangled states of four qubits in the tomographic-probability representation. J Russ Laser Res 33, 269–275 (2012). https://doi.org/10.1007/s10946-012-9281-z

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  • DOI: https://doi.org/10.1007/s10946-012-9281-z

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