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X-WR-CALNAME:Physics Colloquium: Fahad Mahmood\; Johns Hopkins University
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260909T094906Z
UID:tag:localist.com\,2008:EventInstance_3292571
DTSTART:20180131T210000Z
DTEND:20180131T220000Z
DESCRIPTION:Illuminating and manipulating quantum materials with femtosecon
 d light\n\nUncovering and controlling emergent phenomena in quantum materi
 als through external stimuli is a central goal of modern condensed matter 
 physics. However\, a major challenge lies in disentangling many different 
 yet closely coupled interactions and fluctuating orders. Moreover\, since 
 many quantum processes in these materials are coherent only over ultrashor
 t time scales\, it is difficult to probe them using conventional static te
 chniques. In this talk\, I will demonstrate how ultrafast femtosecond opti
 cal techniques can selectively decipher and alter emergent behavior in two
  of the most intensely researched quantum materials in the past decade\, h
 igh-Tc superconducting cuprates and topological insulators. For supercondu
 cting cuprates\, ultrafast infra-red pump-probe and time-domain THz spectr
 oscopy are used to detect collective modes and short-lived fluctuating ord
 ers. For topological insulators\, time-and-angle resolved photoemission sp
 ectroscopy is used to dynamically engineer new light-induced ‘Floquet-Bl
 och’ electronic states. Such studies lay the foundation for utilizing co
 herent light-matter interaction to steer materials into a desired quantum 
 phase.
GEO:42.335064;-71.168846
LOCATION:Higgins Hall\, 310
SUMMARY:Physics Colloquium: Fahad Mahmood\; Johns Hopkins University
URL;VALUE=URI:https://events.bc.edu/event/physics_colloquium_fahad_mahmood_
 johns_hopkins_university
CATEGORIES:Lecture
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