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Fractionalization of minimal excitations in integer quantum Hall edge channels

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 eff ect 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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Contributor : Pascal Degiovanni <>
Submitted on : Tuesday, November 12, 2013 - 8:16:25 PM
Last modification on : Friday, April 24, 2020 - 10:28:04 AM

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Charles Grenier, Julie Dubois, Thibaut Jullien, Preden Roulleau, Christian Glattli, et al.. Fractionalization of minimal excitations in integer quantum Hall edge channels. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2013, 88, pp.085302. ⟨10.1103/PhysRevB.88.085302⟩. ⟨ensl-00903722⟩



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