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arXiv · 1301.6777

Fractionalization of minimal excitations in integer quantum Hall edge channels

C. Grenier·J. Dubois·T. Jullien·P. Roulleau·D. C. Glattli·P. Degiovanni
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Abstract

A theoretical study of the single electron coherence properties of Lorentzian and rectangular pulses is presented. By combining bosonization and the Floquet scattering approach, the effect of interactions on a periodic source of voltage pulses is computed exactly. When such excitations are injected into one of the channels of a system of two copropagating quantum Hall edge channels, they fractionalize into pulses whose charge and shape reflects the properties of interactions. We show that the dependence of fractionalization induced electron/hole pair production in the pulses amplitude contains clear signatures of the fractionalization of the individual excitations. We propose an experimental setup combining a source of Lorentzian pulses and an Hanbury Brown and Twiss interferometer to measure interaction induced electron/hole pair production and more generally to reconstruct single electron coherence of these excitations before and after their fractionalization.

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C. Grenier, J. Dubois, T. Jullien, P. Roulleau, D. C. Glattli, P. Degiovanni. 2013-01-28. Fractionalization of minimal excitations in integer quantum Hall edge channels. https://doi.org/10.1103/physrevb.88.085302

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