Institution: | 1.Centre de Physique Théorique,CNRS, école Polytechnique,Palaiseau,France;2.Department of Physics and Mathematics,University of Insubria,Como,Italy;3.Department of Quantum Electronics,Vilnius University,Vilnius,Lithuania;4.Departamento de Ciencias Naturales y Matemáticas,Pontificia Universidad Javeriana-Cali,Cali,Colombia;5.College of Optical Sciences,Tucson,USA;6.Department of Physics,Constantine the Philosopher University,Nitra,Slovakia |