4 papers
Exploring a New Post-Selection Condition for Efficient Linear Optics Quantum Computation
R. Coen Cagli, P. Aniello, N. Cesario +1
Recently, it was shown that fundamental gates for theoretically efficient quantum information processing can be realized by using single photon sources, linear optics and quantum c…
A perturbative expansion of the evolution operator associated with time-dependent quantum Hamiltonians
P. Aniello
A novel expansion -- which generalizes Magnus expansion -- of the evolution operator associated with a (in general, time-dependent) perturbed Hamiltonian is introduced. It is shown…
Square integrable projective representations and square integrable representations modulo a relatively central subgroup (I): basic results
P. Aniello
We introduce the notion of square integrable group representation modulo a relatively central subgroup and, establishing a link with square integrable projective representations, w…
Trapped ions interacting with laser fields: a perturbative analysis without rotating wave approximation
P. Aniello, V. Man'ko, G. Marmo +3
The Hamiltonian describing a single ion placed in a potential trap in interaction with a laser beam is studied by means of a suitable perturbative approach. It is shown, in particu…