August 25, 2010

Probabilistic cloning of equidistant states

The paper Probabilistic cloning of equidistant states written by O. Jiménez, L. Roa, A. Delgado has been published in PHYSICAL REVIEW A

Abstract:
We study the probabilistic cloning of equidistant states. These states are such that the inner product between them is a complex constant or its conjugate. Thereby, it is possible to study their cloning in a simple way. In particular, we are interested in the behavior of the cloning probability as a function of the phase of the overlap among the involved states. We show that for certain families of equidistant states Duan and Guo read more…

August 24, 2010

Interference and complementarity for two-photon hybrid entangled states

The paper Interference and complementarity for two-photon hybrid entangled states written by W.A.T. Nogueira , M. Santibañez, S. Pádua, A. Delgado, C. Saavedra, L. Neves, G. Lima has been published in SUBMITTED TO PHYSICAL REVIEW A

Abstract:
In this work we generate two-photon hybrid entangled states (HES), where the polarization of one photon is entangled with the transverse spatial degree of freedom of the second photon. The photon pair is created by parametric down-conversion in a polarization-entangled state. A birefringent double-slit couples the polarization and spatial deg read more…

August 21, 2010

Breathers in one-dimensional binary metamaterial models

The paper Breathers in one-dimensional binary metamaterial models written by N. Lazarides, M. I. Molina, G. P. Tsironis has been published in PHYSICA B

Abstract:
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August 20, 2010

Observation of localized modes at phase slips in two-dimensional photonic lattices

The paper Observation of localized modes at phase slips in two-dimensional photonic lattices written by M. I. Molina, A. Szameit, Kivshar Y.S. has been published in OPTICS LETTERS

Abstract:
We experimentally study light localization at phase-slip waveguides and at the intersection of phase slips in a two-dimensional (2D) square photonic lattice. Such systems allow for the observation of a variety of effects, inclu read more…

August 20, 2010

Discrete and surface solitons in photonic graphene nanoribbons

The paper Discrete and surface solitons in photonic graphene nanoribbons written by M. I. Molina, Kivshar Y.S. has been published in OPTICS LETTERS

Abstract:
We analyze localization of light in honeycomb photonic lattices restricted in one dimension, which can be regarded as an optical analog of graphene nanoribbons. We discuss the effect of lattice topo read more…