61 citations · 547 across the 49 of their papers we have counts for
49 papers
Effect of the Atomic Dipole-Dipole Interaction on the Phase Diagrams of 2-Level Matter-Field Systems
S. Cordero, E. Nahmad-Achar, O. Castaños +1
Quantum information measures are used to study the quantum phase diagrams of a two-level extended Dicke model, including the particle dipole-dipole interaction, for a finite number…
From free-evolution to tomographic representation
Sergio Cordero, Ramón López-Peña, Eduardo Nahmad-Achar +3
We use the free evolution propagator to determine the quantum probability representation (i.e., the general expression of the tomogram) of any one-dimensional system described by a…
Dynamic violation of Bell's inequalities in the angular momentum representation
J. A. López-Saldívar, O. Castaños, S. Cordero +2
A parametrization of density matrices of dimensions in terms of the raising and lowering angular momentum operators is established together with an implicit connect…
Geometric properties of qudit systems
J. A. López-Saldívar, O. Castaños, S. Cordero +2
We discuss in general how to geometrically visualize a qudit system, with a particular interest in thermal states. The principle of maximum entropy is used to study the geometric p…
Storing Quantum Information in a generalised Dicke Model via a Simple Rotation
R. López-Peña, S. Cordero, E. Nahmad-Achar +1
A method for storing quantum information is presented for -level atomic systems interacting dipolarly with a single radiation field. The method involves performing simple local…
Wigner Function Analysis of Finite Matter-Radiation Systems
E. Nahmad-Achar, R. López-Peña, S. Cordero +1
We show that the behaviour in phase space of the Wigner function associated to the electromagnetic modes carries the information of both, the entanglement properties between matter…