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Discrete phase-space structures and Wigner functions for N qubits

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Abstract

We further elaborate on a phase-space picture for a system of N qubits and explore the structures compatible with the notion of unbiasedness. These consist of bundles of discrete curves satisfying certain additional properties and different entanglement properties. We discuss the construction of discrete covariant Wigner functions for these bundles and provide several illuminating examples.

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Acknowledgements

This work is partially supported by the Grant 254127 of CONACyT (Mexico). L. L. S. S. acknowledges the support of the Spanish MINECO (Grant FIS2015-67963-P).

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Authors and Affiliations

  1. Departamento de Física, Universidad de Guadalajara, 44420, Guadalajara, Jalisco, Mexico

    C. Muñoz & A. B. Klimov

  2. Departamento de Óptica, Facultad de Física, Universidad Complutense, 28040, Madrid, Spain

    L. Sánchez-Soto

  3. Max-Planck-Institut für die Physik des Lichts, Staudtstraße 2, 91058, Erlangen, Germany

    L. Sánchez-Soto

Authors
  1. C. Muñoz
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  2. A. B. Klimov
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  3. L. Sánchez-Soto
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Correspondence to L. Sánchez-Soto.

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Muñoz, C., Klimov, A.B. & Sánchez-Soto, L. Discrete phase-space structures and Wigner functions for N qubits. Quantum Inf Process 16, 158 (2017). https://doi.org/10.1007/s11128-017-1607-x

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