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

Journal Article · Fri Dec 15 00:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.062304· OSTI ID:20976433

Caminati, Marco; De Martini, Francesco; Perris, Riccardo; Secondi, Veronica ^[1]; Sciarrino, Fabio ^[2]

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1. Dipartimento di Fisica and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Universita 'La Sapienza', Rome 00185 (Italy)
2. Centro di Studi e Ricerche 'Enrico Fermi', Via Panisperna 89/A, Compendio del Viminale, Rome 00184 (Italy)

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.

• OSTI ID: 20976433
• Journal Information: Physical Review. A, Vol. 74, Issue 6; Other Information: DOI: 10.1103/PhysRevA.74.062304; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
CORRELATIONS
ELECTRON SPIN RESONANCE
NONLINEAR PROBLEMS
PARAMETRIC AMPLIFIERS
PHOTONS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS