Positive Cross Correlations in a Normal-Conducting Fermionic Beam Splitter

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-correlations sign occurs due to interaction between different edge-states and does not reflect the statistics of the fermionic particles which `antibunch'.

4 pages, 4 figures

References in corpus (6)

• Quantum Shot Noise
• Positive cross-correlations in a three-terminal quantum dot with ferromagnetic contacts
• Full Counting Statistics of a Superconducting Beam Splitter
• Chaotic dot-superconductor analog of the Hanbury Brown Twiss effect
• Spin current shot noise as a probe of interactions in mesoscopic systems
• The Hanbury Brown and Twiss Experiment with Fermions

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• Probing helicity and the topological origins of helicity via non-local Hanbury-Brown and Twiss correlations
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• Quantum pump driven fermionic Mach-Zehnder interferometer
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• Auto- and cross-correlations in the spinful topological Kondo model