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Updated: Aug 11, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Positive cross correlations in a normal-conducting fermionic beam splitter
S Oberholzer1, E Bieri, C Schönenberger
1Institut für Physik, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland. stefan.oberholzer@unibas.ch
Abstract:
We investigate a beam-splitter experiment implemented in a normal-conducting fermionic electron gas in the quantum Hall regime. The cross correlations between the current fluctuations in the two exit leads of the three terminal device are found to be negative, zero, or even positive, depending on the scattering mechanism within the device. Reversal of the cross correlation sign occurs due to interaction between different edge states and does not reflect the statistics of the fermionic particles which "antibunch."
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