Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources

Abstract : The on-demand emission of coherent and indistinguishable electrons by independent synchronized sources is a challenging task of quantum electronics, in particular regarding its application for quantum information processing. Using two independent on-demand electron sources, we triggered the emission of two single-electron wave packets at different inputs of an electronic beam splitter. Whereas classical particles would be randomly partitioned by the splitter, we observed two-particle interference resulting from quantum exchange. Both electrons, emitted in indistinguishable wave packets with synchronized arrival time on the splitter, exited in different outputs as recorded by the low-frequency current noise. The demonstration of two-electron interference provides the possibility of manipulating coherent and indistinguishable single-electron wave packets in quantum conductors.
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00903726
Contributor : Pascal Degiovanni <>
Submitted on : Tuesday, November 12, 2013 - 8:51:42 PM
Last modification on : Tuesday, July 2, 2019 - 8:58:07 AM

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Erwann Bocquillon, Vincent Freulon, Jean-Marc Berroir, Pascal Degiovanni, Bernard Plaçais, et al.. Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources. Science, American Association for the Advancement of Science, 2013, 339, pp.1059. ⟨10.1126/science.1232572⟩. ⟨ensl-00903726⟩

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