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SUMMARY:Cristiano Ciuti (Université de Paris\, CNRS\, Laboratoire Matéri
 aux et Phénomènes Quantiques\, France)
DTSTART:20211220T170000Z
DTEND:20211220T180000Z
DTSTAMP:20260423T005846Z
UID:QM3/56
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/QM3/56/">Man
 ipulating matter with vacuum fields: cavity-mediated transport in quantum 
 Hall systems</a>\nby Cristiano Ciuti (Université de Paris\, CNRS\, Labora
 toire Matériaux et Phénomènes Quantiques\, France) as part of Quantum M
 atter meets Maths (IST\, Lisbon)\n\n\nAbstract\nThe manipulation of matter
  by giant vacuum fields in electromagnetic resonators is an emergent topic
  in physics and chemistry [1]. In this seminar\, after a general introduct
 ion\, we will see how the cavity vacuum fluctuations can dramatically affe
 ct the physics of disordered quantum Hall systems. In particular\, we will
  show how\, in the presence of electronic disorder\, the cavity can mediat
 e long-range electron hopping via the exchange of virtual photons\, involv
 ing both edge and bulk states [2]. Such an effect can produce a breakdown 
 of the topological protection of the integer quantum Hall effect as demons
 trated in recent transport experiments [3]. Future perspectives will be di
 scussed.\n\n[1] F. J. Garcia-Vidal\, C. Ciuti\, T. W. Ebbesen\, Manipulati
 ng matter by strong coupling to vacuum fields\, Science 373\,178 (2021).\n
 \n[2] C. Ciuti\, Cavity-mediated electron hopping in disordered quantum Ha
 ll systems\, Phys. Rev. B 104\, 155307 (2021).\n\n[3] F. Appugliese\, J. E
 nkner\, G. L. Paravicini-Bagliani\, M. Beck\, C. Reichl\, W. Wegscheider\,
  G. Scalari\, C. Ciuti\, J. Faist\, Breakdown of the topological protectio
 n by cavity vacuum fields in the integer quantum Hall effect\, preprint ar
 Xiv:2107.14145 (2021)\, to appear in\nScience.\n
LOCATION:https://researchseminars.org/talk/QM3/56/
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