[Coloquio ICF] Igor Jex 2011-09-28

[Luis Mochan <mochan@xxxxxxxxxxx>]

Estimados Colegas, 

Es un gusto invitarles al Coloquio que se llevarà a cabo en el
Instituto de Ciencias FÃsicas el prÃximo miÃrcoles, a cargo de

        Igor Jex

de la

        Fac. Ciencias Nucleares, FÃsica e IngenierÃa, Universidad
        TÃcnica Checa  

titulada

        Quantum walks - theory and experiment


Resumen

       Quantum walks represent an excellent playground for explaining,
       modelling and testing a wide range of physical processes and
       effects. The simplest models of walks  -discrete quantum
       walks on a line- are based on the combination of the
       dynamics of the internal degree of freedom and the condition
       shift in the position space (step operator). The time evolution
       of the walk is given by the repeated application of the
       resulting evolution operator. Both pieces of the evolution can
       suffer from imperfections and this leads to deviations from the
       ideal situation. The way how the ideal situation is alternating
       leads to additional interesting situations. The perturbation of
       the coin leads to an effective Gaussian distribution of the
       resulting position distribution. However, for special
       perturbations the quantum walk leads to Anderson localization
       like effects. Similar effects can be observed when the
       perturbation of the step operator is studied. We present
       results on theoretical and experimental studies of perturbed
       quantum walks leading to physically interesting effects.  

Los esperamos el 

                miÃrcoles 28 de septiembre a las 17:30

en el

                Auditorio del Instituto de Ciencias FÃsicas,
                UNAM, Campus Chamilpa

Esperando su entusiasta participaciÃn, quedo de Uds.

Atentamente,

Luis MochÃn

pd. 1. Al final del Coloquio habrà bocadillos, refrescos y vino de honor.
    2. Nuestra direcciÃn, telÃfonos y un mapa pueden consultarse en
                http://em.fis.unam.mx/ICF/DondeEstamos
    3. El programa de nuestro Coloquio y otras actividades acadÃmicas
       de nuestro Instituto pueden consultarse en nuestra pÃgina
                http://www.fis.unam.mx/
    4. El coloquio de la siguiente semana estarà a cargo de David Harrington
       del Instituto de AstronomÃa de la Univ. de Hawaii en Honolulu.