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  • Title: Real-time decoherence of Landau and Levitov quasiparticles in quantum Hall edge channels.
    Author: Ferraro D, Roussel B, Cabart C, Thibierge E, Fève G, Grenier Ch, Degiovanni P.
    Journal: Phys Rev Lett; 2014 Oct 17; 113(16):166403. PubMed ID: 25361272.
    Abstract:
    Quantum Hall edge channels at integer filling factor provide a unique test bench to understand the decoherence and relaxation of single-electron excitations in a ballistic quantum conductor. In this Letter, we obtain a full visualization of the decoherence scenario of energy (Landau)- and time (Levitov)-resolved single-electron excitations at filling factor ν = 2. We show that the Landau excitation exhibits a fast relaxation followed by spin-charge separation whereas the Levitov excitation only experiences spin-charge separation. We finally suggest to use Hong-Ou-Mandel-type experiments to probe specific signatures of these different scenarios.
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