Entangled Hanbury Brown Twiss effects with edge states

Details Entangled Hanbury Brown Twiss effects with edge states Entangled Hanbury Brown Twiss effects with edge states

Publishing date

2004-04-06

URL

arxiv.org/abs/cond-mat/0404123v1

Journals

Physica E 20, 33 (2003)

Science

Physics

Field

Condensed Matter

SubField

Mesoscale and Nanoscale Physics

Additional info

International Symposium "Quantum Hall Effect: Past, Present and Future"

Type

Scientific paper

Abstract

Electronic Hanbury Brown Twiss correlations are discussed for geometries in which transport is along adiabatically guided edge channels. We briefly discuss partition noise experiments and discuss the effect of inelastic scattering and dephasing on current correlations. We then consider a two-source Hanbury Brown Twiss experiment which demonstrates strikingly that even in geometries without an Aharonov-Bohm effect in the conductance matrix (second-order interference), correlation functions can (due to fourth-order interference) be sensitive to a flux. Interestingly we find that this fourth-order interference effect is closely related to orbital entanglement. The entanglement can be detected via violation of a Bell Inequality in this geometry even so particles emanate from uncorrelated sources.

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