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UID:0-935@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20240119T134500
DTEND;TZID=Europe/Paris:20240119T144500
DTSTAMP:20240108T161511Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/quantum-seminar-d
 u-lptms-francesco-mattiotti-strasburg/
SUMMARY:Quantum Seminar du LPTMS: Francesco Mattiotti (Strasbourg Universit
 y) - Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 -
  19 Jan 24 13:45
DESCRIPTION:Strong light-matter coupling in disordered systems: multifracta
 lity and protected transportFrancesco Mattiotti (Strasbourg University)\n\
 nWhen two-level quantum emitters and a cavity mode coherently exchange ene
 rgy at a rate faster than their decay\, the system enters the strong coupl
 ing regime of cavity-QED\, where light-matter polaritonic states play an i
 mportant role. Such states are superpositions composed of “bright” emi
 tter modes and cavity photons\, while numerous remaining emitter states ha
 ve no photon contribution\, i.e.\, remain “dark”. Over the past decade
 \, the strong coupling regime has been explored as a tool to engineer fund
 amental properties of matter such as the chemical reaction rates [1]. Much
  interest is currently raised by the possibility of modifying energy trans
 port\, for which disorder plays a crucial role. While it is well known tha
 t coherent transport in disordered media can be inhibited due to Anderson 
 localization of the eigenstates [2]\, the impact of strong light-matter co
 upling on Anderson localization has been explored only very recently [3-8]
 . As a paradigmatic example\, I will discuss the spectral and transport pr
 operties of the disordered Tavis-Cummings model\, showing that the dark st
 ates can feature unusual critical properties characterized by extended but
  non-ergodic (multifractal) wavefunctions [3\,5\,8].\n\n[1] J. A. Hutchiso
 n et al.\, Angew. Chem. Int. Ed. 51\, 1592 (2012)\n[2] P.W. Anderson\, Phy
 s. Rev. 109\, 1492 (1958)\n[3] T. Botzung et al.\, Phys. Rev. B 102\, 1442
 02 (2020)\n[4] N. C. Chávez et al.\, Phys. Rev. Lett. 126\, 153201 (2021)
 \n[5] J. Dubail et al.\, Phys. Rev. A 105\, 023714 (2022)\n[6] G. Engelhar
 dt and J. Cao\, Phys. Rev. B 105\, 064205 (2022)\n[7] T. F. Allard and G. 
 Weick\, Phys. Rev. B 106\, 245424 (2022)\n[8] F. Mattiotti et al.\, arXiv:
 2302.14718 (2023)\n
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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