We gratefully acknowledge support from
the Simons Foundation and member institutions.
Full-text links:

Download:

Current browse context:

cond-mat.mes-hall

Change to browse by:

References & Citations

Bookmark

(what is this?)
CiteULike logo BibSonomy logo Mendeley logo del.icio.us logo Digg logo Reddit logo

Condensed Matter > Mesoscale and Nanoscale Physics

Title: Anyon braiding and telegraph noise in a graphene interferometer

Abstract: The search for anyons, quasiparticles with fractional charge and exotic exchange statistics, has inspired decades of condensed matter research. Quantum Hall interferometers enable direct observation of the anyon braiding phase via discrete interference phase jumps when the quasiparticle number changes. Here, we observe the universal anyonic braiding phase in both the $\nu = 1/3$ and $4/3$ fractional quantum Hall states by probing three-state random telegraph noise (RTN) in real-time. We find that the observed RTN stems from anyon quasiparticle number $n$ fluctuations and reconstruct three Aharonov-Bohm oscillation signals phase shifted by $2\pi/3$, corresponding to the three possible interference branches from braiding around $n$ (mod 3) anyons. Hence, we fully characterize the anyon exchange statistics using new methods that can readily extend to non-abelian states.
Comments: 19 pages, 11 figures
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Strongly Correlated Electrons (cond-mat.str-el)
Cite as: arXiv:2403.18983 [cond-mat.mes-hall]
  (or arXiv:2403.18983v2 [cond-mat.mes-hall] for this version)

Submission history

From: Thomas Werkmeister [view email]
[v1] Wed, 27 Mar 2024 20:00:56 GMT (12999kb,D)
[v2] Wed, 17 Apr 2024 15:53:09 GMT (13000kb,D)

Link back to: arXiv, form interface, contact.