Revision 2

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Title · changed: Revision 1: Is the $12/5$ quantum Hall state a Fibonacci anyon phase; Revision 2: Is the $12/5$ quantum Hall state a Fibonacci anyon phase?
Plain: The $12/5$ state in gallium arsenide may host Fibonacci anyons, whose braiding alone could perform any quantum computation, but this has not been tested.
Precise: For the $\nu = 12/5$ state in GaAs, determine whether the topological order is the particle-hole conjugate of the Read-Rezayi $Z_3$ parafermion state (Fibonacci anyons, $e* = e/5$) or an Abelian hierarchy state; the candidates differ in $\kappa_{xy}$ and in tunnelling exponents. An answer is $\kappa_{xy}$ and $e*$ measurements consistent with one candidate.
Settled by: Thermal Hall conductance at $12/5$ plus shot-noise quasiparticle charge measurement.
Kind: well-posed
Answer type: identification
References: (empty)
Literature status: open
Status note: (empty)
Posed since: 1999

Decisions