2.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR835 papers
- The Ohio State UniversityUS812 papers
- Universidade de São PauloBR798 papers
- Panjab UniversityIN636 papers
- Universidade Federal do ABCBR635 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT634 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR603 papers
- Benemérita Universidad Autónoma de PueblaMX594 papers
- European Organization for Nuclear ResearchCH583 papers
- Wayne State UniversityUS576 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT570 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di CataniaIT565 papers
14 papers · 2 filters
Semiclassical Husimi functions for spin systems
Marcel Novaes, Marcus A. M. de Aguiar
We derive a semiclassical approximation to the Husimi functions of stationary states of spin systems. We rederive the Bohr-Sommerfeld quantization for spin by locating the poles of…
Semiclassical Propagation of Wavepackets with Real and Complex Trajectories
M. A. M. de Aguiar, M. Baranger, L. Jaubert +2
We consider a semiclassical approximation for the time evolution of an originally gaussian wave packet in terms of complex trajectories. We also derive additional approximations re…
Semiclassical limit of the entanglement in closed pure systems
Renato M. Angelo, Kyoko Furuya
We discuss the semiclassical limit of the entanglement for the class of closed pure systems. By means of analytical and numerical calculations we obtain two main results: (i) the s…
Tunnelling Through Two Barriers
Stefano De Leo, Pietro Rotelli
Recent studies of the tunnelling through two opaque barriers claim that the transit time is independent of the barrier widths and of the separation distance between the barriers. W…
Effects of the interplay between interaction and disorder in bipartite entanglement
L. F. Santos, G. Rigolin
We use a disordered anti-ferromagnetic spin-1/2 chain with anisotropic exchange coupling to model an array of interacting qubits. All qubits have the same level spacing, except two…
Atom-field transfer of coherence in a two-photon micromaser assisted by a classical field
A. F. Gomes, A. Vidiella-Barranco
We investigate the transfer of coherence from atoms to a cavity field initially in a statistical mixture in a two-photon micromaser arrangement. The field is progressively modified…
Quantum teleportation of an arbitrary two qubit state and its relation to multipartite entanglement
G. Rigolin
We explicitly show a protocol in which an arbitrary two qubit a|00> + b|01> + c|10> + d|11> is faithfully and deterministically teleported from Alice to Bob. We construct the 16 or…
High efficiency transfer of quantum information and multi-particle entanglement generation in translation invariant quantum chains
Martin B Plenio, Fernando L Semiao
We demonstrate that a translation invariant chain of interacting quantum systems can be used for high efficiency transfer of quantum entanglement and the generation of multi-partic…
Qualitative aspects of entanglement in the Jaynes-Cummings model with an external quantum field
Marcelo A. Marchiolli, Ricardo J. Missori, Jose A. Roversi
We present a mathematical procedure which leads us to obtain analytical solutions for the atomic inversion and Wigner function in the framework of the Jaynes-Cummings model with an…
Quantum key distribution using polarized coherent states
A. Vidiella-Barranco, L. F. M. Borelli
We discuss a continuous variables method of quantum key distribution employing strongly polarized coherent states of light. The key encoding is performed using the variables known…
Quantum linear mutual information and classical correlations in globally pure bipartite systems
R. M. Angelo, S. A. Vitiello, M. A. M. de Aguiar +1
We investigate the correlations of initially separable probability distributions in a globally pure bipartite system with two degrees of freedom for classical and quantum systems.…
Survival law in a potential model
S. De Leo, P. Rotelli
The radial equation of a simple potential model has long been known to yield an exponential decay law in lowest order (Breit-Wigner) approximation. We demonstrate that if the calcu…
On the P-representable subset of all bipartite Gaussian separable states
M. C. de Oliveira
P-representability is a necessary and sufficient condition for separability of bipartite Gaussian states only for the special subset of states whose covariance matrix are $Sp(2,R)\…
Characterization and quantification of symmetric Gaussian state entanglement through a local classicality criterion
M. C. de Oliveira
A necessary and sufficient condition for characterization and quantification of entanglement of any bipartite Gaussian state belonging to a special symmetry class is given in terms…