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On the Discrimination Between Classical and Quantum States

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Abstract

With the purpose of introducing a useful tool for researches concerning foundations of quantum mechanics and applications to quantum technologies, here we address three quantumness quantifiers for bipartite optical systems: one is based on sub-shot-noise correlations, one is related to antibunching and one springs from entanglement determination. The specific cases of parametric downconversion seeded by thermal, coherent and squeezed states are discussed in detail.

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Authors and Affiliations

  1. Istituto Nazionale di Ricerca Metrologica, 10135, Torino, Italia

    Giorgio Brida, Ivo P. Degiovanni, Marco Genovese, Ivano Ruo Berchera & Valentina Schettini

  2. National Laboratory for Ultrafast and Ultraintense Optical Science, C.N.R.—I.N.F.M., 22100, Como, Italia

    Maria Bondani

  3. U.d.R. Como, C.N.I.S.M., 22100, Como, Italia

    Maria Bondani

  4. Dipartimento di Fisica, Università degli Studi di Milano, 20133, Milano, Italia

    Matteo G. A. Paris

  5. U.d.R. Milano Università, C.N.I.S.M., 20133, Milano, Italia

    Matteo G. A. Paris

  6. I.S.I. Foundation, 10133, Torino, Italia

    Matteo G. A. Paris

Authors
  1. Giorgio Brida
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  2. Maria Bondani
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  3. Ivo P. Degiovanni
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  4. Marco Genovese
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  5. Matteo G. A. Paris
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  6. Ivano Ruo Berchera
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  7. Valentina Schettini
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Corresponding author

Correspondence to Marco Genovese.

Additional information

This work has been supported by SanPaolo Foundation, Quantum Candela EU Project.

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Brida, G., Bondani, M., Degiovanni, I.P. et al. On the Discrimination Between Classical and Quantum States. Found Phys 41, 305–316 (2011). https://doi.org/10.1007/s10701-009-9396-4

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  • DOI: https://doi.org/10.1007/s10701-009-9396-4

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