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URL:https://murmitoyen.com/events/vanille/udem/detail/819719-light-induced-
 quantum-states-of-matter-with-fractional-charges-pouyan-ghaemi-city-colleg
 e-of-new-york
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Light induced quantum states of matter with fractional charges - Po
 uyan Ghaemi (City College of New York)
DESCRIPTION:Light induced quantum states of matter with fractional charges 
 Pouyan GhaemiThe City College of New YorkCity University of New York
Abstr
 act: When a metal is placed in a strong magnetic field\, the kinetic energ
 y of electrons is suppressed\, and electron-electron interaction becomes t
 he dominant energy scale and controls the properties of the system. This l
 eads to novel phenomena\, such as realization of fractional charge\, which
  cannot be explained based on properties of individual electrons. Such pha
 ses result from a collective and coherent organization of all electrons in
  the sample. On another front\, it has been long known that interaction of
  photons and single electronic states in materials can illuminate importan
 t quantum properties of the single electronic states. The emission and abs
 orption of the hydrogen atom is a well-known example in this regard. In th
 is talk\, I show that interaction of light with a collective phase of matt
 er\, such as fractional Hall states\, will open new ways to manipulate ent
 angled electronic states. I will show that such interaction of photons wit
 h entangled electronic states can lead to the development new electronic s
 tates with potential applications in quantum computing. Phys. Rev. Lett. 1
 19\, 247403 (2017) Phys. Rev. B 95\, 235439 (2017)
Web page of Prof. Pouya
 n Ghaemi
Cette conférence est présentée par le RQMP Versant Nord du 
 Département de physique de l'Université de Montréal et de Génie phys
 ique de la Polytechnique.
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