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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-556@lptms.universite-paris-saclay.fr
DTSTART:20180109T110000Z
DTEND:20180109T120000Z
DTSTAMP:20171222T155921Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-nicolas-cherroret/
SUMMARY:Séminaire du LPTMS: Nicolas Cherroret - LPTMS\, salle 201\, 2ème 
 étage\, Bât 100\, Campus d'Orsay - 9 Jan 18 11:00
DESCRIPTION:Novel perspectives from Anderson localization of atomic matter 
 waves\nNicolas Cherroret (Laboratoire Kastler-Brossel\, Université Pierre
  et Marie Curie)\n&nbsp\;\n\nIn the last decades\, the field of atom optic
 s has allowed for accurate experimental investigations of quantum transpor
 t with cold atoms. In this context\, the physics of Anderson localization 
 (AL) can today be finely studied\, using tunable atomic matter waves in we
 ll controlled optical random potentials.\nAfter briefly introducing the ma
 in concepts of atom optics in random optical potentials\, I will address t
 he problem of the out-of-equilibrium evolution of a non-interacting matter
  wave in a random potential. The discussion will be focused on two differe
 nt dynamical scenarios where unexpected manifestations of AL show up. Firs
 t\, I will discuss the spatial spreading of a narrow wave packet\, a situa
 tion where AL triggers a « mesoscopic echo » peak in the density distr
 ibution. This phenomenon has been observed experimentally with cold atoms 
 only recently. In the second scenario\, I will consider the evolution of a
  plane matter wave in the random potential. In this case\, the interesting
  dynamics takes place in momentum space\, where AL manifests itself as a s
 urprising « coherent  forward scattering peak »\, twin of the well-kno
 wn coherent backscattering effect. I will conclude the talk with open ques
 tions on the role of atomic interactions.
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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