75 citations · 187 across the 11 of their papers we have counts for
5 papers · 1 filter
Optimal electron propagation on a quantum chain by a topological phase
S. Paganelli, G. L. Giorgi, F. de Pasquale
We study the quantum diffusion of an electron in a quantum chain starting from an initial state localized around a given site. As the wavepacket diffuses, the probability of recons…
Quantum phase diffusion of a Bose system: beyond the Hartree-Fock-Bogoliubov approximation
Ferdinando de Pasquale, Gian Luca Giorgi
A diffusion process is usually assumed for the phase of the order parameter of a Bose system of finite size. The theoretical basis is limited to the so called Bogoliubov approximat…
Mesoscopic continuous and discrete channels for quantum information transfer
F. de Pasquale, G. Giorgi, S. Paganelli
We study the possibility of realizing perfect quantum state transfer in mesoscopic devices. We discuss the case of the Fano-Anderson model extended to two impurities. For a channel…
Conditional sign flip via teleportation
Gian Luca Giorgi, Ferdinando de Pasquale, Simone Paganelli
We present a model to realize a probabilistic conditional sign flip gate using only linear optics. The gate operates in the space of number state qubits and is obtained by a noncon…
Teleportation on a quantum dot array
F. de Pasquale, G. Giorgi, S. Paganelli
We present a model of quantum teleportation protocol based on a double quantum dot array. The unknown qubit is encoded using a pair of quantum dots, coupled by tunneling, with one…