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Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 70: Transport: Topological Insulators II (organized by TT)

TT 70.5: Vortrag

Mittwoch, 2. April 2014, 17:30–17:45, HSZ 204

Hanbury Brown-Twiss and Aharonov-Casher effects in a quantum spin Hall Corbino ring — •Anders Ström1, Henrik Johannesson2, and Patrik Recher11Institute for Mathematical Physics, TU Braunschweig, Germany — 2Department of Physics, University of Gothenburg, Sweden

We study the entanglement production in a quantum spin Hall ring where electrons of different spins are emitted from a biased source and detected in two different grounded detectors. The fermionic Hanbury-Brown Twiss effect gives rise to entanglement in the system, measurable via the current-current correlations between the detectors. The production of entanglement is electrically controlled via the Aharonov-Casher phases arising from the Rashba coupling in the system.

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