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Foundations of Physics

, Volume 41, Issue 3, pp 305–316 | Cite as

On the Discrimination Between Classical and Quantum States

  • Giorgio Brida
  • Maria Bondani
  • Ivo P. Degiovanni
  • Marco GenoveseEmail author
  • Matteo G. A. Paris
  • Ivano Ruo Berchera
  • Valentina Schettini
Article

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.

Entanglement Macro-objectification 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Giorgio Brida
    • 1
  • Maria Bondani
    • 2
    • 3
  • Ivo P. Degiovanni
    • 1
  • Marco Genovese
    • 1
    Email author
  • Matteo G. A. Paris
    • 4
    • 5
    • 6
  • Ivano Ruo Berchera
    • 1
  • Valentina Schettini
    • 1
  1. 1.Istituto Nazionale di Ricerca MetrologicaTorinoItalia
  2. 2.National Laboratory for Ultrafast and Ultraintense Optical ScienceC.N.R.—I.N.F.M.ComoItalia
  3. 3.U.d.R. ComoC.N.I.S.M.ComoItalia
  4. 4.Dipartimento di FisicaUniversità degli Studi di MilanoMilanoItalia
  5. 5.U.d.R. Milano UniversitàC.N.I.S.M.MilanoItalia
  6. 6.I.S.I. FoundationTorinoItalia

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