3 papers
quant-ph1998
Measuring quantum optical Hamiltonians
G. M. D'Ariano, L. Maccone
We show how recent state-reconstruction techniques can be used to determine the Hamiltonian of an optical device that evolves the quantum state of radiation. A simple experimental…
quant-ph1998
Quantum tomography of mesoscopic superpositions of radiation states
G. M. D'Ariano, C. Macchiavello, L. Maccone
We show the feasibility of a tomographic reconstruction of Schrödinger cat states generated according to the scheme proposed by S. Song, C.M. Caves and B. Yurke [Phys. Rev. A 41, 5…
quant-ph1998
Noise, errors and information in quantum amplification
G. M. D'Ariano, C. Macchiavello, L. Maccone
We analyze and compare the characterization of a quantum device in terms of noise, transmitted bit-error-rate (BER) and mutual information, showing how the noise description is mea…