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DTSTART:20260329T030000
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DTSTAMP:20260724T104729Z
UID:6a621a7000aa7530372093@ist.ac.at
DTSTART:20260805T110000
DTEND:20260805T120000
DESCRIPTION:Speaker: Christina Henzinger\nhosted by Hryhoriy Polshyn\nAbstr
 act: Exchange statistics are a fundamental principle of quantum mechanics\
 , dictating the symmetry of identical particle wavefunctions. The exchange
 -induced unitary transformation of anyonic wavefunctions can be probed usi
 ng electronic fractional quantum Hall (FQH) interferometers\, where quasip
 articles on the interfering FQH edge braid with those localized within the
  cavity. Here\, we add a gate-controlled dot/anti-dot in the center of a b
 ilayer graphene FQH interferometer to tune the number of enclosed anyons. 
 We observe hundreds of controlled phase slips in the conductance across th
 e interferometer for both abelian and non-abelian states\, consistent with
  discrete changes in the localized quasiparticle population. For abelian a
 nyons\, the observed phase slips agree with the theoretically expected val
 ue. At half filling\, our results suggest the interfering edge carries cha
 rge |e/e| = 1/2 abelian excitations\, whereas charge |e/e| = 1/4 putative 
 non-abelian anyons remain localized in the interferometer cavity. Controll
 ing the population of localized e/4 anyons in an interferometer marks a si
 gnificant milestone towards observing their non-local exchange statistics 
 and building a fault tolerant topological qubit based on non-abelian anyon
  manipulation.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:hpolshyn@ist.ac.at
SUMMARY:Christina Henzinger: Controlled localization of anyons in a graphen
 e quantum Hall interferometer
URL:https://talks-calendar.ista.ac.at/events/6571
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