Condensed Matter Seminar: "Designer non-Abelian anyons and exotic quantum circuitry"

Thursday, September 21, 2017 - 11:30am

Kirill Shtengel (University of California Riverside)

Non-Abelian anyons are widely sought for the exotic fundamental physics they harbour as well as for their possible applications for quantum information processing. Currently, there are numerous blueprints for stabilizing the simplest type of non-Abelian anyon, a Majorana zero energy mode bound to a vortex or a domain wall. One such candidate system, a so-called "Majorana wire" can be made by judiciously interfacing readily available materials; the experimental evidence for the viability of this approach is presently emerging. Following this idea, we introduce a device fabricated from conventional fractional quantum Hall states and s-wave superconductors. Similarly to a Majorana wire, the ends of our "quantum wire" would bind "parafermions", exotic non-Abelian anyons which can be viewed as fractionalized Majorana zero modes.In this talk, I will briefly discuss their properties and describe how such parafermions can be used to construct new and potentially useful circuit elements which include current and voltage mirrors, transistors for fractional charge currents and "flux capacitors".

Physics 298

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