1.8k citations · 3.1k across the 35 of their papers we have counts for
32 papers · 1 filter
Weyl-invariant derivation of Dirac equation from scalar tensor fields in curved space-time
Enrico Santamato, Francesco De Martini
In this work we present a derivation of Dirac's equation in a curved space-time starting from a Weyl-invariant action principle in 4+K dimensions. The Weyl invariance of Dirac's eq…
The intrinsic helicity of the elementary particles and the proof of the spin-statistics theorem
Enrico Santamato, Francesco De Martini
The traditional Standard Quantum Mechanics is unable to solve the Spin-Statistics problem, i.e. to justify the utterly important Pauli Exclusion Principle. We show that this is due…
Nonlocality, No-Signalling and Bell's Theorem investigated by Weyl's Conformal Differential Geometry
Francesco De Martini, Enrico Santamato
The principles and methods of the Conformal Quantum Geometrodynamics (CQG) based on the Weyl's differential geometry are presented. The theory applied to the case of the relativist…
Solving the Quantum Nonlocality Enigma by Weyl's Conformal Geometrodynamics
Enrico Santamato, Francesco De martini
Since the 1935 proposal by Einstein Podolsky and Rosen the riddle of nonlocality, today demonstrated by innumerable experiments, has been a cause of concern and confusion within th…
Investigating macroscopic quantum superpositions and the quantum-to-classical transition by optical parametric amplification
Francesco De Martini, Fabio Sciarrino
The present work reports on an extended research endeavor focused on the theoretical and experimental realization of a macroscopic quantum superposition (MQS) made up with photons.…
Measurement-induced quantum operations on multiphoton states
Chiara Vitelli, Nicolò Spagnolo, Fabio Sciarrino +1
We investigate how multiphoton quantum states obtained through optical parametric amplification can be manipulated by performing a measurement on a small portion of the output ligh…
Hybrid methods for witnessing entanglement in a microscopic-macroscopic system
Nicolò Spagnolo, Chiara Vitelli, Mauro Paternostro +2
We propose a hybrid approach to the experimental assessment of the genuine quantum features of a general system consisting of microscopic and macroscopic parts. We infer entangleme…
Entanglement criteria for microscopic-macroscopic systems
Nicolo' Spagnolo, Chiara Vitelli, Fabio Sciarrino +1
We discuss the conclusions that can be drawn on a recent experimental micro-macro entanglement test [F. De Martini, F. Sciarrino, and C. Vitelli, Phys. Rev. Lett. 100, 253601 (2008…
Enhanced Resolution of Lossy Interferometry by Coherent Amplification of Single Photons
C. Vitelli, N. Spagnolo, L. Toffoli +2
In the quantum sensing context most of the efforts to design novel quantum techniques of sensing have been constrained to idealized, noise-free scenarios, in which effects of envir…
Anomalous resilient to decoherence macroscopic quantum superpositions generated by universally covariant optimal quantum cloning
N. Spagnolo, F. Sciarrino, F. De Martini
We show that the quantum states generated by universal optimal quantum cloning of a single photon represent an universal set of quantum superpositions resilient to decoherence. We…
Coherent scattering of a Multiphoton Quantum Superposition by a Mirror-BEC
Francesco De Martini, Fabio Sciarrino, Chiara Vitelli +1
We present the proposition of an experiment in which the multiphoton quantum superposition consisting of N= 10^5 particles generated by a quantum-injected optical parametric amplif…
Quantum to classical transition via fuzzy measurements on high gain spontaneous parametric down-conversion
C. Vitelli, N. Spagnolo, L. Toffoli +2
We consider the high gain spontaneous parametric down-conversion in a non collinear geometry as a paradigmatic scenario to investigate the quantum-to-classical transition by increa…
Complete analysis of measurement-induced entanglement localization on a three-photon system
Miroslav Gavenda, Radim Filip, Eleonora Nagali +2
We discuss both theoretically and experimentally elementary two-photon polarization entanglement localization after break of entanglement caused by linear coupling of environmental…
Towards Quantum Experiments with Human Eyes Detectrors Based on Cloning via Stimulated Emission ?
Francesco De Martini
We believe that a recent, unconventional theoretical work published in Physical Review Letters 103, 113601 (2009) by Sekatsky, Brunner, Branciard, Gisin, Simon, albeit appealing at…
Entanglement localization after a coupling to incoherent noisy system
Fabio Sciarrino, Eleonora Nagali, Francesco De Martini +2
We report the experimental realization of entanglement localization which restores polarization entanglement completely redirected after a linear coupling with incoherent and noisy…
Wigner-function theory and decoherence of the quantum-injected optical parametric amplifier
Nicolo' Spagnolo, Chiara Vitelli, Tiziano De Angelis +2
Recent experimental results demonstrated the generation of a quantum superpositon (MQS), involving a number of photons in excess of 5x10^4, which showed a high resilience to losses…
Anomalous lack of decoherence of the Macroscopic Quantum Superpositions based on phase-covariant Quantum Cloning
Francesco De Martini, Fabio Sciarrino, Nicolo' Spagnolo
We show that all Macroscopic Quantum Superpositions (MQS) based on phase-covariant quantum cloning are characterized by an anomalous high resilence to the de-coherence processes. T…
Entanglement and Quantum Superposition of a Macroscopic - Macroscopic system
Francesco De Martini
Two quantum Macro-states and their Macroscopic Quantum Superpositions (MQS) localized in two far apart, space - like separated sites can be non-locally correlated by any entangled…
Polarization control of single photon quantum orbital angular momentum states
E. Nagali, F. Sciarrino, F. De Martini +4
The orbital angular momentum of photons, being defined in an infinitely dimensional discrete Hilbert space, offers a promising resource for high-dimensional quantum information pro…
Decoherence, Einselection and Classicality of a Macroscopic Quantum Superposition generated by Quantum Cloning
Francesco De Martini, Fabio Sciarrino, Nicolo' Spagnolo
The high resilience to de-coherence shown by a recently discovered Macroscopic Quantum Superposition (MQS) generated by a quantum injected optical parametric amplifier (QI-OPA) and…
Entanglement concentration after a multi-interactions channel
Eleonora Nagali, Fabio Sciarrino, Francesco De Martini +2
Different procedures have been developed in order to recover entanglement after propagation over a noisy channel. Besides a certain amount of noise, entanglement is completely lost…
Quantum information transfer from spin to orbital angular momentum of photons
Eleonora Nagali, Fabio Sciarrino, Francesco De Martini +4
The optical "spin-orbit" coupling occurring in a suitably patterned nonuniform birefringent plate known as `q-plate' allows entangling the polarization of a single photon with its…
Entanglement-Seeded-Dual Optical Parametric Amplification: Applications to Quantum Communication, Imaging, and Metrology
Ryan T. Glasser, Hugo Cable, Jonathan P. Dowling +3
The study of optical parametric amplifiers (OPAs) has been successful in describing and creating nonclassical light for use in fields such as quantum metrology and quantum lithogra…
One-way quantum computation via manipulation of polarization and momentum qubits in two-photon cluster states
Giuseppe Vallone, Enrico Pomarico, Francesco De Martini +1
Four-qubit cluster states of two photons entangled in polarization and linear momentum have been used to realize a complete set of single qubit rotations and the C-NOT gate for equ…