output
19922026
researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2003 · quant-phShow all

12 papers · 2 filters

quant-ph2003★ 41 cited

Geometric phase for mixed states: a differential geometric approach

S. Chaturvedi, E. Ercolessi, G. Marmo +3

A new definition and interpretation of geometric phase for mixed state cyclic unitary evolution in quantum mechanics are presented. The pure state case is formulated in a framework…

quant-ph2003★ 10 cited

Quantum Systems and Alternative Unitary Descriptions

G. Marmo, A. Simoni, F. Ventriglia

Motivated by the existence of bi-Hamiltonian classical systems and the correspondence principle, in this paper we analyze the problem of finding Hermitian scalar products which tur…

quant-ph2003★ 3 cited

Coarse grained and fine dynamics in trapped ion Raman schemes

B. Militello, P. Aniello, A. Messina

A novel result concerning Raman coupling schemes in the context of trapped ions is obtained. By means of an operator perturbative approach, it is shown that the complete time evolu…

quant-ph2003★ 8 cited

Dynamics of entanglement between two atomic samples with spontaneous scattering

Antonio Di Lisi, Silvio De Siena, Fabrizio Illuminati

We investigate the effects of spontaneous scattering on the evolution of entanglement of two atomic samples, probed by phase shift measurements on optical beams interacting with bo…

quant-ph2003★ 141 cited

Determination of continuous variable entanglement by purity measurements

Gerardo Adesso, Alessio Serafini, Fabrizio Illuminati

We classify the entanglement of two--mode Gaussian states according to their degree of total and partial mixedness. We derive exact bounds that determine maximally and minimally en…

quant-ph2003★ 11 cited

Zeno dynamics and constraints

P. Facchi, G. Marmo, S. Pascazio +2

We investigate some examples of quantum Zeno dynamics, when a system undergoes very frequent (projective) measurements that ascertain whether it is within a given spatial region. I…

quant-ph2003★ 8 cited

Structure of multiphoton quantum optics. I. Canonical formalism and homodyne squeezed states

Fabio Dell'Anno, Silvio De Siena, Fabrizio Illuminati

We introduce a formalism of nonlinear canonical transformations for general systems of multiphoton quantum optics. For single-mode systems the transformations depend on a tunable f…

quant-ph2003★ 7 cited

Structure of multiphoton quantum optics. II. Bipartite systems, physical processes, and heterodyne squeezed states

Fabio Dell'Anno, Silvio De Siena, Fabrizio Illuminati

Extending the scheme developed for a single mode of the electromagnetic field in the preceding paper ``Structure of multiphoton quantum optics. I. Canonical formalism and homodyne…

quant-ph2003★ 14 cited

Quantum entangling power of adiabatically connected hamiltonians

Alioscia Hamma, Paolo Zanardi

The space of quantum Hamiltonians has a natural partition in classes of operators that can be adiabatically deformed into each other. We consider parametric families of Hamiltonian…

quant-ph2003★ 28 cited

Comment on "Quantitative wave-particle duality in multibeam interferometers"

G. Bimonte, R. Musto

In a recent paper [Phys. Rev. {\bf A64}, 042113 (2001)] S. Dürr proposed an interesting multibeam generalization of the quantitative formulation of interferometric wave-particle du…

quant-ph2003

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…

quant-ph2003★ 33 cited

On Interferometric Duality in Multibeam Experiments

G. Bimonte, R. Musto

We critically analyze the problem of formulating duality between fringe visibility and which-way information, in multibeam interference experiments. We show that the traditional no…