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7 papers · 2 filters
On Nonlinear Bosonic Coherent States
Marco Genovese, Francesco A. Raffa, Mario Rasetti
Nonlinear coherent states are an interesting resource for quantum technologies. Here we investigate some critical features of the single-boson nonlinear coherent states, which are…
Experimental estimation of entanglement at the quantum limit
Giorgio Brida, Ivo Degiovanni, Angela Florio +5
Entanglement is the central resource of quantum information processing and the precise characterization of entangled states is a crucial issue for the development of quantum techno…
Microscopic description of 2d topological phases, duality and 3d state sums
Zoltan Kadar, Annalisa Marzuoli, Mario Rasetti
Doubled topological phases introduced by Kitaev, Levin and Wen supported on two dimensional lattices are Hamiltonian versions of three dimensional topological quantum field theorie…
Dissipation and Decoherence in Nanodevices: a Generalized Fermi's Golden Rule
David Taj, Rita Claudia Iotti, Fausto Rossi
We shall revisit the conventional adiabatic or Markov approximation, which --contrary to the semiclassical case-- does not preserve the positive-definite character of the correspon…
Completely Positive Markovian Quantum Dynamics in the Weak-Coupling Limit
David Taj, Fausto Rossi
We obtain new types of exponential decay laws for solutions of density-matrix master equations in the weak-coupling limit: after comparing with results already present in the liter…
Characterization of Spectral Entanglement of Spontaneous Parametric-Down Conversion Biphotons
G. Brida, V. Caricato, M. Genovese +3
We verified operational approach based on direct measurement of entanglement degree for bipartite systems. In particular spectral distributions of single counts and coincidence for…