Intensity correlations, entanglement properties and ghost imaging in multimode thermal-seeded parametric downconversion: Theory

We address parametric-downconversion seeded by multimode pseudo-thermal fields. We show that this process may be used to generate multimode pairwise correlated states with entanglement properties that can be tuned by controlling the seed intensities. Multimode pseudo-thermal fields seeded parametric-downconversion represents a novel source of correlated states, which allows one to explore the classical-quantum transition in pairwise correlations and to realize ghost imaging and ghost diffraction in regimes not yet explored by experiments.Comment: 9 pages, 3 figure

Chaotic imaging in frequency downconversion

We analyze and realize the recovery, by means of spatial intensity correlations, of the image obtained by a seeded frequency downconversion process in which the seed field is chaotic and an intensity modulation is encoded on the pump field. Although the generated field is as chaotic as the seed field and does not carry any information about the modulation of the pump, an image of the pump can be extracted by measuring the spatial intensity correlations between the generated field and one Fourier component of the seed

Classical and quantum correlations in frequency downconversion: application to transfer and recovery of images and to ghost imaging.

missin

Classical and quantum correlations in frequency downconversion: application to transfer and recovery of images and to ghost imaging.

missin

Un'introduzione ai sistemi RFId - 1: principali caratteristiche tecnologiche e funzionali

The paper introduces the basic technological and functional features of the radiofrequency identification (RFId) systems, interpreted in the perspective of the development of an "Internet of things".L'articolo introduce le principali caratteristiche tecnologiche e funzionali dei sistemi di identificazione in radiofrequenza (RFId), interpretati nella prospettiva dello sviluppo di una "Internet delle cose"

Ghost imaging with intense correlated light

We present a new ghost-imaging experiment that is realized by exploiting two intense correlated beams. The beams involved are signal and idler of a seeded parametric downconversion. The peculiarity of this scheme is that the seed field is an intense pseudo-thermal field generated by passing a laser beam through two rotating ground glass plates

Ghost imaging with intense fields from chaotically seeded parametric downconversion

We present the first experimental demonstration, to the best of our knowledge, of ghost imaging realized with intense beams generated by a parametric downconversion interaction seeded with pseudothermal light. As expected, the real image of the object is reconstructed satisfying the thin-lens equation. We show that the experimental visibility of the reconstructed image is in accordance with the theoretically expected one