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Hong-Ou-Mandel experiment for temporal investigation of single-electron fractionalization

Author

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  • V. Freulon

    (Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité)

  • A. Marguerite

    (Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité)

  • J.-M. Berroir

    (Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité)

  • B. Plaçais

    (Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité)

  • A. Cavanna

    (CNRS-Laboratoire de Photonique et de Nanostructures, Route de Nozay)

  • Y. Jin

    (CNRS-Laboratoire de Photonique et de Nanostructures, Route de Nozay)

  • G. Fève

    (Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research University, CNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris Cité)

Abstract

Coulomb interaction has a striking effect on electronic propagation in one-dimensional conductors. The interaction of an elementary excitation with neighbouring conductors favours the emergence of collective modes, which eventually leads to the destruction of the Landau quasiparticle. In this process, an injected electron tends to fractionalize into separated pulses carrying a fraction of the electron charge. Here we use two-particle interferences in the electronic analogue of the Hong-Ou-Mandel experiment in a quantum Hall conductor at filling factor 2 to probe the fate of a single electron emitted in the outer edge channel and interacting with the inner one. By studying both channels, we analyse the propagation of the single electron and the generation of interaction-induced collective excitations in the inner channel. These complementary pieces of information reveal the fractionalization process in the time domain and establish its relevance for the destruction of the quasiparticle, which degrades into the collective modes.

Suggested Citation

  • V. Freulon & A. Marguerite & J.-M. Berroir & B. Plaçais & A. Cavanna & Y. Jin & G. Fève, 2015. "Hong-Ou-Mandel experiment for temporal investigation of single-electron fractionalization," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7854
    DOI: 10.1038/ncomms7854
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    Cited by:

    1. Thomas Werkmeister & James R. Ehrets & Yuval Ronen & Marie E. Wesson & Danial Najafabadi & Zezhu Wei & Kenji Watanabe & Takashi Taniguchi & D. E. Feldman & Bertrand I. Halperin & Amir Yacoby & Philip , 2024. "Strongly coupled edge states in a graphene quantum Hall interferometer," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Hwanchul Jung & Dongsung T. Park & Seokyeong Lee & Uhjin Kim & Chanuk Yang & Jehyun Kim & V. Umansky & Dohun Kim & H.-S. Sim & Yunchul Chung & Hyoungsoon Choi & Hyung Kook Choi, 2023. "Observation of electronic modes in open cavity resonator," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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