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Kiesel H, Renz A, Hasselbach F. Observation of Hanbury Brown-Twiss anticorrelations for free electrons. Nature. 2002;418(6896):392-4doi: 10.1038/nature00911.
Kiesel, H., Renz, A., & Hasselbach, F. (2002). Observation of Hanbury Brown-Twiss anticorrelations for free electrons. Nature, 418(6896), 392-4. https://doi.org/10.1038/nature00911
Kiesel, Harald, et al. "Observation of Hanbury Brown-Twiss anticorrelations for free electrons." Nature vol. 418,6896 (2002): 392-4. doi: https://doi.org/10.1038/nature00911
Kiesel H, Renz A, Hasselbach F. Observation of Hanbury Brown-Twiss anticorrelations for free electrons. Nature. 2002 Jul 25;418(6896):392-4. doi: 10.1038/nature00911. PMID: 12140550.
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Nature. 2002 Jul 25;418(6896):392-4. doi: 10.1038/nature00911.

Observation of Hanbury Brown-Twiss anticorrelations for free electrons.

Nature

Harald Kiesel, Andreas Renz, Franz Hasselbach

Affiliations

  1. Institut für Angewandte Physik der Universität Tübingen, Auf der Morgenstelle 10, D-72076 Tübingen, Germany.

PMID: 12140550 DOI: 10.1038/nature00911

Abstract

Fluctuations in the counting rate of photons originating from uncorrelated point sources become, within the coherently illuminated area, slightly enhanced compared to a random sequence of classical particles. This phenomenon, known in astronomy as the Hanbury Brown-Twiss effect, is a consequence of quantum interference between two indistinguishable photons and Bose Einstein statistics. The latter require that the composite bosonic wavefunction is a symmetric superposition of the two possible paths. For fermions, the corresponding two-particle wavefunction is antisymmetric: this excludes overlapping wave trains, which are forbidden by the Pauli exclusion principle. Here we use an electron field emitter to coherently illuminate two detectors, and find anticorrelations in the arrival times of the free electrons. The particle beam has low degeneracy (about 10(-4) electrons per cell in phase space); as such, our experiment represents the fermionic twin of the Hanbury Brown-Twiss effect for photons.

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