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Dipartimento di

 
 

Seminari  

Il Dipartimento di Fisica ospita Seminari di Dipartimento, Seminari organizzati dai gruppi di ricerca, e Physics Colloquia organizzati dalla Scuola di Dottorato.

I Seminari vengono inseriti nel Calendario.

Di seguito gli eventuali Seminari in programma nel mese in corso:

Seminari  
19/10/2017 Ore 14:30 - 16:00

Seminario di Dipartimento. Evolution of strategies in engineering biological tissues. Relatore: Ivan Martin

in Aula Consiglio, Dipartimento di Fisica della Univ. degli Studi di Milano, Via Celoria 16, Milano

alle 14:30

Relatore:
Ivan Martin, Dept. of Biomedicine and Dept. of Surgery University Hospital, Basel

Some recent strategies of tissue engineering will be presented.

INFO: Prof. Alessandro Lascialfari

Documenti correlati
11/10/2017 Ore 14:30 - 16:00

Seminario di Dip. "Cooperative scattering of light by strongly driven atomic clouds". Relatore: Romain Bachelard

11 Ottobre, 14:30, auletta di Ottica Quantistica
Dipartimento di Fisica, Via Celoria 16, Milano

Relatore: Romain Bachelard
, Universidade Federal de Sao Cãrlos, Brazil

The scattering of light by dilute cold atomic clouds is a long-range problem by nature, as light induces an effective 1/r interaction between the atomic dipoles. Furthermore, the relative absence of decoherence allows for correlations to be preserved over long distances. Examples of long-range effects in dilute clouds include superradiance and subradiance, as well as modifications of the transition linewidth. While most previous works in dilute clouds addressed classical scattering, we study the modifications of the fluorescence spectrum due to this long-range interaction, as the atoms are strongly driven and present the so-called Mollow sidebands [1].
First, considering a large disordered cloud in front of a mirror, we show that it is possible to produce interference fringes based on the Mollow sidebands, as the radiation of the atoms and their mirror images interfere. It thus allows to extract information on the optical coherence of scatterers in disordered clouds [2].
Then, we show that the interactions of the strongly-driven atoms leads to the appearance of new peaks (higher-order Mollow sidebands) as well as a spectral asymmetry [3].
Using a truncation of the hierarchy of quantum correlations [4], the quantum dynamics of hundreds of coupled particles can thus be investigated. The reported modifications of the fluorescence spectrum thus correspond to a signature of entanglement of the atoms over large distances (i.e., many wavelengths).

[1] B. R. Mollow, Phys. Rev. 188, 1969 (1969).
[2] N. Piovella, R. Celistrino Teixeira, R. Kaiser, Ph. Courteille, and R. Bachelard, http://arxiv.org/abs/1709.04529
[3] L. Pucci, A. Roy, T. S. do Espirito Santo, R. Kaiser, M. Kastner, and R. Bachelard, Phys. Rev. A 95, 053625 (2017).
[4] L. Pucci, A. Roy, and M. Kastner, Phys. Rev. B 93, 174302 (2016).


INFO
:

dott. Nicola Piovella, nicola.piovella@unimi.it

03/10/2017 Ore 12:30 - 14:00

Seminario di Dip. "Climate variability and change in Italy in the last two centuries". Relatore: Maurizio Maugeri

3 Ottobre, 12:30, aula BS, Via Celoria 26, Milano

Relatore: Maurizio Maugeri,
Department of Environmental Science and Policy, Università degli Studi di Milano

Italy had a very relevant role in the development of meteorological observations that is documented by the invention of some of the most important meteorological instruments and by the development of the first network of meteorological stations. Therefore, a heritage of meteorological data of enormous value has been accumulated in Italy over the last centuries.
These data have been recovered and analysed in a 20-year research initiative developed by Milan University and by CNR-ISAC.  The presentation will summarize the main steps of this research initiative highlighting its contribution to a better knowledge of past climate variability and change over Italy and to a better understanding of the underlying causes.


INFO
:

prof. Maurizio Maugeri, maurizio.maugeri@unimi.it

prof. Giulio Costantini, giulio.costantini@unimi.it

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