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PART A-Quantum information-Entanglement, EPR correlations, and mesoscopic quantum superposition by the high-gain quantum injected parametric amplification

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published
  • Marco Caminati
  • Francesco De Martini
  • Riccardo Perris
  • Fabio Sciarrino
  • Veronica Secondi
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Article number062304
<mark>Journal publication date</mark>7/12/2006
<mark>Journal</mark>Physical Review-Section A-Atomic Molecular and Optical Physics
Volume74
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We investigate the multiparticle quantum superposition and the persistence of bipartite entanglement of the output field generated by the quantum injected high-gain optical parametric amplification of a single photon. The physical configuration based on the optimal universal quantum cloning has been adopted to investigate how the entanglement and the quantum coherence of the system persists for large values of the nonlinear parametric gain g.