{"id":887,"date":"2010-03-26T14:11:26","date_gmt":"2010-03-26T12:11:26","guid":{"rendered":"https:\/\/webs.uab.cat\/giq\/seminar\/coherent-transport-presence-disorder-and-nonlinearity\/"},"modified":"2010-03-26T14:11:26","modified_gmt":"2010-03-26T12:11:26","slug":"coherent-transport-presence-disorder-and-nonlinearity","status":"publish","type":"seminar","link":"https:\/\/webs.uab.cat\/giq\/seminar\/coherent-transport-presence-disorder-and-nonlinearity\/","title":{"rendered":"Coherent transport in presence of disorder and nonlinearity"},"content":{"rendered":"<p>In general, transport of waves in disordered media cannot fully be  &nbsp;described as a simple diffusion process, since wave interference  &nbsp;effects lead to a reduction or even complete suppression of the  &nbsp;diffusion constant (weak or strong localization) and the appearance of  &nbsp;a coherent backscattering peak. This talk presents a diagrammatic theory for treating the impact of  &nbsp;nonlinearities on these coherent transport effects. In particular, the conditions under which nonlinear effects diminish or enhance the  &nbsp;height of the coherent backscattering peak are discussed. Whereas most  &nbsp;of these results apply to classical or single-particle quantum waves, we will finally also address multi-photon scattering from strongly  &nbsp;driven two-level atoms, where coherent transport is additionally  &nbsp;affected by quantum mechanical decoherence.<br \/><span style=\"color: #888888;\"> <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In general, transport of waves in disordered media cannot fully be &nbsp;described as a simple diffusion process, since wave interference &nbsp;effects lead to a reduction or even complete suppression of the &nbsp;diffusion constant (weak or strong localization) and the appearance of &nbsp;a coherent backscattering peak. This talk presents a diagrammatic theory for treating the impact [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"template":"","class_list":["post-887","seminar","type-seminar","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar\/887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/seminar"}],"about":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/types\/seminar"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/users\/20"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/giq\/wp-json\/wp\/v2\/media?parent=887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}