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Biomedical subjects

P Mataloni

Publications and source records attributed to P Mataloni.

8 recordsLinked to original sources
PubMed2005

All-versus-nothing nonlocality test of quantum mechanics by two-photon hyperentanglement.

We report the experimental realization and the characterization of polarization and momentum hyperentangled two-photon states, generated by a new parametric source of correlated photon pairs. By adoption of these states an "all-versus-nothing" test of quantum mechanics was performed. The two-photon hyperentangled states are expected to find at an increasing rate a widespread application in state engineering and quantum information.

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PubMed2004

Generation and characterization of Werner states and maximally entangled mixed states by a universal source of entanglement.

We present a novel technique for generating two-photon polarization mixed states of any structure, which is based on the peculiar spatial characteristics of a high brilliance source of entangled pairs. Werner states and maximally entangled mixed states, two well-known families of mixed states important for quantum information, have been created and fully characterized by this technique. We have also investigated and tested the nonlocal properties of these states.

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PubMed2003

Detection of entanglement with polarized photons: experimental realization of an entanglement witness.

We report on the first experimental realization of an entanglement witness, a method to detect entanglement with few local measurements. The present demonstration has been performed with polarized photons in Werner states, a well-known family of mixed states that can be either separable or nonseparable. The Werner states are generated by a novel high brilliance source of bipartite entangled states by which the state mixedness can be easily adjusted.

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PubMed2003

Frequency hopping in quantum interferometry: efficient up-down conversion for qubits and ebits.

A novel Mach-Zehnder interferometer terminated at two different frequencies realizes in a quantum regime the nonlinear frequency conversion of optical quantum superposition states. The information-preserving character of the relevant unitary transformation has been experimentally demonstrated for input qubits and ebits. Besides its own intrinsic fundamental interest, the new scheme is expected to find important applications in modern quantum information technology.

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PubMed2000

Bose-einstein partition statistics in superradiant spontaneous emission

We report the realization of the spatial counterpart of the Dicke superradiance. The new process is revealed by the realization of the spatial quantum partition statistics within the detection of photons emitted in sub-Poissonian regime by an active microcavity excited by ultrashort pulses. The superradiant enhancement of the time decay of the dipole excitation has also been investigated.

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