Entanglement and nonlocality for a mixture of pair-coherent states

  • Authors:
  • S. Mancini;P. Tombesi

  • Affiliations:
  • INFM, Dipartimento di Fisica, Università di Camerino, Camerino, Italy;INFM, Dipartimento di Fisica, Università di Camerino, Camerino, Italy

  • Venue:
  • Quantum Information & Computation
  • Year:
  • 2003

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Abstract

We consider a bipartite continuous variables quantum mixture coming from phase randomization of a pair-coherent state. We study the nonclassical properties of such a mixture. In particular, we quantify its degree of entanglement, then we show possible violations of Bell's inequalities. We also consider the use of this mixture in quantum teleportation. Finally, we compare this mixture with that obtained from a pair-coherent state by single photon loss.