ENCUENTRO DE CUANTRONICA<br><br> HOY<br>
<br>
Lunes 26 de Octubre, 15:00 hs<br>
Aula Seminario, Depto de Física<br>
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<br>
Las charlas estarán a cargo de:<br>
<br>
*Cecilia Cormick, ``Studying entanglement dynamics in an ion trap´´<br>
*Guillermo Quinteiro, "Interacción de 'twisted light' con semiconductores"<br>
<br>
(ver resúmenes abajo)<br>
<br>
Estan todos cordialmente invitados.<br>
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Studying entanglement dynamics in an ion trap, (Cecilia Cormick)<br>
<br>
The evolution of the entanglement between two oscillators coupled with a common<br>
environment is non-trivial and has been extensively studied (Phys.<br>
Rev. Lett. 100, 220401). The long time limit exhibits qualitatively<br>
different behaviors (phases) depending on parameters such as the<br>
initial state and the temperature of the bath. The possible phases<br>
include cases where entanglement suffers from sudden death, others<br>
with infinite sequence of events of sudden death and revivals, or<br>
non-vanishing long-term entanglement. In this talk I will describe a<br>
simple way of realizing and observing these different scenarios in an<br>
ion trap experiment. The proposal involves three ions in a linear<br>
trap. The degrees of freedom associated to the transverse motion of<br>
two of them correspond to the two<br>
oscillators while the central ion, subject to continuous laser<br>
cooling, is the gateway to a decohering reservoir. The scheme proposed<br>
is an instance of a quantum simulator that seems to be realizable with<br>
current technology. The simulation is an example of an interesting<br>
class which involves the observation and control of the evolution of<br>
quantum open systems in the non-Markovian regime.</div>