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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-820@lptms.universite-paris-saclay.fr
DTSTART:20220414T093000Z
DTEND:20220414T123000Z
DTSTAMP:20220411T152349Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/ipht-lptms-days-q
 uantum-day/
SUMMARY:IPhT/LPTMS Days: Quantum Day - Petit amphi\, bâtiment Pascal n° 5
 30 - 14 Avr 22 09:30
DESCRIPTION:\nThe IPhT/LPTMS days: Quantum Day at the "Petit amphi" at Pasc
 al Building (9h15 - 12h30)\n\n9h15 : Opening speech by the directors\n9h30
  : Leonardo Mazza (LPTMS)\nFractional spin and fractional statistics of qu
 antum Hall quasiparticles from density profiles\nWe present a study of the
  quasiparticle excitations that appear in the fractional quantum Hall effe
 ct. Focusing on several examples\, including the Laughlin state\, the Halp
 erin 221 state and the Moore-Read state\, we show that the density profile
  of the liquid hosting them contains information about their fractional sp
 in and statistics. In particular\, by studying the second moment of the so
 -called depletion density\, it is possible to compute the fractional spin 
 of the quasiparticles\, and using the spin-statistics theorem to compute t
 heir fractional statistics. The possibility of accessing these properties 
 without using interferometric schemes may open the way to novel experiment
 s using for instance ultra-cold gases or fluids of light.\n\n10h : Cristin
 a Bena (IPHT)\nMajorana and other boundary modes from impurity states via 
 T-matrix\nWe provide a new and exact formalism to describe the formation o
 f end\, edge or surface states through the evolution of impurity-induced s
 tates. We propose a general algorithm that consists of finding the impurit
 y states via the T-matrix formalism and showing that they evolve into boun
 dary modes when the impurity potential goes to infinity. We apply this tec
 hnique to obtain Majorana states\, topological insulator edges states and 
 graphene edges states. We also show that this approach provides us with a 
 new direct and non-numerical technique to obtain the surface Green's funct
 ions for three-dimensional systems and we apply it to Weyl semimetals. \n
 \n10h30 : Coffee Break\n11h : Dmitry Petrov (LPTMS)\nBeyond-mean-field eff
 ects in quantum gases\n11h30 : Jean-Daniel Bancal (IPHT)\nDevice-independe
 nt quantum key distribution\n12h : Mikhail Zvonarev (LPTMS)\nMobile impuri
 ty in one dimension\n12h30 : Lunch buffet
CATEGORIES:seminars
LOCATION:Petit amphi\, bâtiment Pascal n° 530\, rue André Rivière\, Ors
 ay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Rivière\, Orsay
 \, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Petit amphi\, bâtiment Pasca
 l n° 530:geo:0,0
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