Einstein-Podolsky-Rosen correlations in entangled macroscopic quantum systems

F. De Martini; E. Nagali; F. Sciarrino; C. Vitelli

doi:10.1117/12.740720

25 September 2007 Einstein-Podolsky-Rosen correlations in entangled macroscopic quantum systems

F. De Martini, E. Nagali, F. Sciarrino, C. Vitelli

Proceedings Volume 6710, Quantum Communications and Quantum Imaging V; 67100Y (2007) https://doi.org/10.1117/12.740720
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

We investigate the multiphoton states generated by high-gain optical parametric amplification of a single injected photon, polarization encoded as a "qubit". The experiment configuration exploits the optimal phase-covariant cloning in the high gain regime. The interference fringe pattern showing the non local transfer of coherence between the injected qubit and the mesoscopic amplified output field involving up to 4000 photons has been investigated. A probabilistic new method to extract full information about the multiparticle output wavefunction has been implemented. This technique can be adopted to test the entanglement between a microscopic system and a macro one.

Citation Download Citation

F. De Martini, E. Nagali, F. Sciarrino, and C. Vitelli "Einstein-Podolsky-Rosen correlations in entangled macroscopic quantum systems", Proc. SPIE 6710, Quantum Communications and Quantum Imaging V, 67100Y (25 September 2007); https://doi.org/10.1117/12.740720

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