IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Computation of energy exchanges by combining information theory and a key thermodynamic relation: Physical applications
Autor/es:
E.M.F. CURADO; NOBRE, F.D.; A. PLASTINO
Revista:
PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2010 vol. 389 p. 970 - 980
ISSN:
0378-4371
Resumen:
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
stateset al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A 79 (2009) 022108), we have determined, for various
decoherence channels, four-qubit initial states exhibiting the most robust possible entanglement.
Here, we explore some geometrical features of the trajectories in state space generated by the
decoherence process, connecting the initially robust pure state with the completely decohered
mixed state obtained at the end of the evolution. We characterize these trajectories by recourse
to the distance between the concomitant time-dependent mixed state and di®erent reference
states
In a recent work (Borras et al., Phys. Rev. A