title: Two-particle Aharonov-Bohm effect and entanglement in the electronic Hanbury Brown-Twiss setup.
abstract: We analyze a Hanbury Brown-Twiss geometry in which particles are injected from two independent sources into a mesoscopic conductor in the quantum Hall regime. All partial waves end in different reservoirs without generating any single-particle interference; in particular, there is no single-particle Aharonov-Bohm effect. However, exchange effects lead to two-particle Aharonov-Bohm oscillations in the zero-frequency current cross correlations. We demonstrate that this is related to two-particle orbital entanglement, detected via violation of a Bell inequality. The transport is along edge states and only adiabatic quantum point contacts and normal reservoirs are employed.
authors.affiliation: Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland.
authors.forename: P
authors.initials: P
authors.lastname: Samuelsson
authors.forename: E V
authors.initials: EV
authors.lastname: Sukhorukov
authors.forename: M
authors.initials: M
authors.lastname: Büttiker