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Fractional quantum Hall effect

A game of five halves

Proof that the delicate 5/2 fractional quantum Hall state survives constriction within a quantum point contact paves the way to realizing an experimental platform for exploring the bizarre world of non-abelian particle statistics.

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Figure 1: An Aharonov–Bohm quasiparticle interferometer for exploring non-abelian statistics.

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Goldman, V. A game of five halves. Nature Phys 3, 517–518 (2007). https://doi.org/10.1038/nphys681

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