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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…