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Bocquillon, E; Parmentier, F D; Grenier, C; Berroir, J-M; Degiovanni, P; Glattli, D C; Plaçais, B; Cavanna, A; Jin, Y; Fève, G
Physical review letters, 05/2012, Volume: 108, Issue: 19Journal Article
We have realized a quantum optics like Hanbury Brown-Twiss (HBT) experiment by partitioning, on an electronic beam splitter, single elementary electronic excitations produced one by one by an on-demand emitter. We show that the measurement of the output currents correlations in the HBT geometry provides a direct counting, at the single charge level, of the elementary excitations (electron-hole pairs) generated by the emitter at each cycle. We observe the antibunching of low energy excitations emitted by the source with thermal excitations of the Fermi sea already present in the input leads of the splitter, which suppresses their contribution to the partition noise. This effect is used to probe the energy distribution of the emitted wave packets.
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