International Conference on the Physics of Semiconductors - ICPS 2008 - Rio de Janeiro, Brazil

L-R: H. Sakaki, Klaus von Klitzing, J.P. Restrepo

Klaus von Klitzing: The Nobel Prize in Physics 1985

"for the discovery of the quantized Hall effect"

Semiconductor research and the Nobel Prize in physics seem to be contradictory since one may come to the conclusion that such a complicated system like a semiconuctor is not useful for very fundamental discoveries. Indeed, most of the experimental data in solid state physics are analyzed on the basis of simplified theories, and very often the properties of a semiconductor device is described by empirical formulas since the microscopic details are too complicated.
Up to 1980 nobody expected that there exists an effect like the Quantized Hall Effect, which depends exclusively on fundamental constants and is not affected by irregularities in the semiconductor like impurities or interface effects.

THE QUANTIZED HALL EFFECT
Nobel lecture, December 9, 1985

On Sunday July 27th a Nobel Prize Recipients Symposium, chaired by Marvin Cohen (UC Berkeley, USA) and open to the public, will take place at the ICPS conference site. 2:00 - 2:10 PM Prof. Marvin Cohen gives opening remarks and introduces the first speaker. 2:10 - 2:35 PM Zhores Alferov, Russia (Nobel Prize in Physics in 2000) 2:40 - 3:05 PM Alan Heeger, USA (Nobel Prize in Chemistry in 2000) 3:10 - 3:35 PM Klaus von Klitzing, Germany (Nobel Prize in Physics in 1985) 3:35 - 4:05 PM Break 4:10 - 4:35 PM Robert Laughlin, USA (Nobel Prize in Physics in 1998) 4:40 - 5:05 PM Charles Townes, USA (Nobel Prize in Physics in 1964) 5:10 - 5:40 PM Panel - Questions and discussions Duration: 3 hours and 40 minutes Registration starts at 12 noon Biographies on Nobelprize.org: Zhores Alferov Alan Heeger Klaus Von Klitzing Robert Laughlin Charles Hard Townes The official Nobel Prize Website: Nobelprize.org

Wigner function and decoherence in a microcavity-Qdot system

Juan P. Restrepo^{, a,} , Herbert Vinck-Posada^a and Boris A. Rodríguez^a

^aInstituto de Física, Universidad de Antioquia, AA 1226 Medellín, Colombia

Corresponding author.

February 4-8, 2008 Havana, CUBA

List of invited speakers:

Gotthard Seifert (Technical University of Dresden, Germany)
Sergy Grebenshchikov (MPI, Gottingen, Germany)
Lorenz Cederbaum (Physikalisch-Chemisches Institut, Germany)
Andrea Cannizzo (EPFL, Switzerland)
Oleg Boiarkine (EPFL, Switzerland)
Luigi Bonacina (Université de Genève, Switzerland)
Zamik Rosenwaks (University of the Negev, Israel)
Vincenzo Aquilanti (University of Perugia, Italy)
Carlo Petrongolo (University of Siena, Italy)
Antonio Laganá (University of Perugia, Italy)
Camillo la Mesa (University of Rome "La Sapienza", Italy)
Vincenzo Schettino (Univerity of Firenze, Italy)
Marie-Louise Saboungi (C.N.R.S. / Université d'Orléans, France)
David Price (CNRS-CRMHT, Orleans, France)
Jean-Pierre Galaup (Centre d'Orsay, France)
Olivier Faucher (Institut Carnot de Bourgogne, UMR CNRS)
Osman Atabek (Lab. Photophysique Moléculaire du CNRS, France)
Claudine Crepin (Univ. de Paris Sud, France)
Niloufar Shafizadeh (Laboratoire de Photophysique Moléculaire du CNRS, France)
Roland Lefebvre (Univ. de Paris Sud, France)
Pascal Larregaray (Université Bordeaux1, France)
Pascal Honvault (Université de Franche-Comté, France)
Octavio Roncero (I.M.A.F.F. - C.S.I.C., Spain)
Pablo Villarreal (I.M.A.F.F. - C.S.I.C., Spain)
Tomás González Lezana (I.M.A.F.F. - C.S.I.C., Spain)
Antonio Aguilar-Navarro (Universitat de Barcelona, Spain)
Antonio J.C. Varandas (University of Coimbra, Portugal)
Timothy Wright (University of Nottingham, UK)
Jeremy M. Hutson (University of Durham, UK)
Alexei Buchachenko (University of Moscu, Russia)
Oleg Vasyutinskii (Ioffe Institute, RAS, Russia)
Toshio Kasai (Osaka University, Japan)
Koichi Yamachita (University of Tokyo, Japan)
Hiroki Nakamura (Institute for Molecular Science, Japan)
Stephen Berry (University of Chicago, USA)
Edwin L. Sibert ( University of Winsconsin, USA)
Kenneth Janda (University of California, USA)
Roger Anderson (University of California, USA)
Joel M. Bowman (Emory University, USA)
François Lique (University of Maryland, USA)
Sylvio Canuto (University of Sao Paulo, Brazil)
Edelsys Codorniú (InSTEC, Cuba)
Augusto Gonzalez (ICIMAF, Cuba)



The Conference will take place February 4 to 8, 2008, with a previous School from January 30th to February 2nd, 2008, in Havana, Cuba.

Third International School on Photodynamics, January 30–February 2, 2008


The school will focus on graduate subjects for higher level formation of a new generation of young researchers. With this purpose, professors with excellence in both teaching and research have been invited to give short courses on some background topics according to the scope of the Conference.

Third International School on Photodynamics, January 30th - February 2nd, 2008

Pre-conference School on Photodynamics
January 30 - February 2, 2008

Invited Professors:
Prof. Sergy Yu. Grebenshchikov Title: Non-adiabatic transitions in electronically excited molecules Contents :

1. Born-Oppenheimer approximation, its violation near conical intersections.
2. Adiabatic and diabatic representations.
3. Semiclassical and quantum mechanical calculations of the transition probabilities/spectra for non-adiabatic dynamics in small molecules.

Prof. Pablo Villarreal Title: Structure, dynamics and spectroscopy of weakly bounded molecular aggregates
Contents
1. Rare gas aggregates
Tutorial I
-- The He2 paradigm. Experimental detection of HeN.
-- Systems composed by three identical particles.
-- Pair coordinates and distributed Gaussian functions (DGF).
-- The Ar3 example.
Tutorial II
-- Triangle requirement: three- dimensional cage.
-- Non-orthogonal basis: pseudo-eigenvalue problem and Löwdin method.
-- Distributions. Surfaces through Herón theorem.
2. Rg-BC Systems (Rg = rare gas atom, BC = diatomic molecule)
Tutorial III
-- Jacobi coordinates: bound and continuum states.
-- Interaction radiation/matter: perturbation treatment.
-- Photo-absorption cross-sections: Energy and time domains.
-- Vibrational photo-predissociation (VP). “Exact” treatment and dressed lines.
3. RgN-BC Systems , N > 1
Tutorial IV
-- N=2: Satellite or valence coordinates. Kinetic couplings.
-- Diabatic “exact” formulation.
-- Adiabatic and quantum-chemistry approaches.
-- Extreme cases: heavy and light BC molecules.
Tutorial V
-- Helium aggregates doped with diatomic impurities. Boson/fermion solvents.
-- N>2: The diatomic dopant as perturbed by the environment.
-- Polar/non polar molecules: Infra-red/Raman spectral simulations.
-- Relaxation mechanisms: VP and line broadening.

Gotan Project - La Revancha del Tango

Wigner Fuction

The statistical properties of a single mode light field are described by the Wigner function W, which is a quasiprobability distribution in phase space that brings out directly the properties of a quantum state. In particular, it can take on negative values, the central concept of interference of probability amplitudes reflects itself in these negative parts.







Schrödinger's Cat State Wigner Function


I present the dynamics of the coupled two level-cavity systems in a dissipative environment. The Master Equation was integrated using a numerical strategy that allows us to consider initial states like Squeezed and Schrödinger’s Cat States. The characterization of the dynamics is done by using the Wigner function.

Evolution of the Squeezed State Wigner Function

L. G. Lutterbach and L. Davidovich, Phys. Rev. Lett., 78, 2547(1997); G. Nogues, A. Rauschenbeutel, et. al., Phys. Rev. A, 62, 054101(2000); A. Bertet, A. Auffeves, et. al., Phys. Rev. Lett., 89, 200402(2002).

Bohemian Rhapsody with Mnozil Brass

The Storm

CLACSA XIII

CLACSA XIII is the continuation of a series of events that started in 1980 as the Latin American Symposium on Surface Physics. Due to the increasingly interdisciplinary nature of this field and its applications, the name of the series was changed into Latin American Conference on Surface Science and Applications. CLACSA XIII will be held in Santa Marta Colombia during the week of 3-7 December 2007.This conference is the thirteen edition of a successful series that is realized every two years. This conference aims to bring together physicists, chemists, biologists and engineers interested in new materials and Nanotechnology, taking into account the development of these areas in Latin America with the purpose of promoting and appropriating Nanotechnology in the region.

The CLACSA XIII is organized with the support of the Sociedad Latinoamericana de Ciencias de Superficie (SLACS), la Universidad de los Andes and Universidad Nacional in Bogotá-Colombia

PURPOSE

To serve as a forum for the exchange of information of research being conducted in the Americas on the physics of solid surfaces and related areas and material science, biomaterials and nano-scale phenomena and technology.

To stimulate collaborative research in this important and very active branch of science between researchers based in Latin America and those in the United States, Canada and Europe.

To promote further development of nanotechnology infrastructure in Latin America.

The conference will consist of plenary lectures, invited talks and oral presentations previously selected among the contributed papers. Poster sections are also planned with the main purpose of motivating discussions between senior physicists and young scientists of our region. We are stimulating the participation of graduate students mainly those developing their theses on topics related to the conference areas.