2011/02/10 by David J Clarke, Kirill Shtengel · 7 citations
Physics and Astronomy · #Anyon #Context (archaeology) #Interferometry #Ising model #Polarization (electrochemistry) #Quantum and electron transport phenomena #Quantum many-body systems #Quasiparticle #Topological Materials and Phenomena #Topological quantum computer #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1088/1367-2630/13/5/055005
published in New Journal of Physics 13(5), 055005 (IOP Publishing) · 12 pages, 2 figures. Submitted to New Journal of Physics
arxiv created 2011/02/10 · openalex publication_date 2011/05/19 · arxiv updated 2011/06/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We investigate the proposed experimental setup for measuring the topological charge in an Ising anyon system by means of Fabry–Pérot interferometry with a chiral edge state. We show that such an interferometer has the unintended but not necessarily unwelcome effect of stabilizing the state of the system being measured (i.e. a topological qubit). We show further that interactions between the edge mode and the localized bulk quasiparticles can have the effect of polarizing the qubit, again stabilizing its state. We discuss these results in the context of recent interferometer experiments in the 5/2 fractional quantum Hall state, where the first of these effects is small, but the second may be relevant to the observed phenomena.