Method to Generate Complex Quasinondiffracting Optical Lattices

Method to generate complex quasinondiffracting optical lattices.

We put forward a technique that allows generating quasinondiffracting light beams with a variety of complex transverse shapes. We show that, e.g., spiraling patterns, patterns featuring curved or bent bright stripes, or patterns featuring arbitrary combinations of harmonic, Bessel, Mathieu, and parabolic beams occupying different domains in the transverse plane can be produced. The quasinondiff...

A method to generate complex quasi-nondiffracting optical lat-tices

Servando López-Aguayo, Yaroslav V. Kartashov, Victor A. Vysloukh, and Lluis Torner ICFO-Institut de Ciencies Fotoniques, and Universitat Politecnica de Catalunya, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain Photonics and Mathematical Optics Group, Tecnólogico de Monterrey, Monterrey México 64849 Departamento de Fisica y Matematicas, Universidad de las Americas – Puebla...

Twisted complex superfluids in optical lattices

We show that correlated pair tunneling drives a phase transition to a twisted superfluid with a complex order parameter. This unconventional superfluid phase spontaneously breaks the time-reversal symmetry and is characterized by a twisting of the complex phase angle between adjacent lattice sites. We discuss the entire phase diagram of the extended Bose-Hubbard model for a honeycomb optical la...

Jessen / Deutsch , " Optical Lattices " 1 OPTICAL LATTICES

Unsupervised method to generate page templates

In this paper, we propose a method for automatically inferring the different page templates used to layout the document content. The first step of the method consists in performing a logical analysis of the document. Depending of the coverage of this step, a given number of document elements will be labeled. Then geometric relations are computed between these labeled elements, and page template...