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Coherent and robust high-fidelity generation of a biexciton in a quantum dot by rapid adiabatic passage

Kaldewey, Timo and Lueker, Sebastian and Kuhlmann, Andreas V. and Valentin, Sascha R. and Ludwig, Arne and Wieck, Andreas D. and Reiter, Doris E. and Kuhn, Tilmann and Warburton, Richard J.. (2017) Coherent and robust high-fidelity generation of a biexciton in a quantum dot by rapid adiabatic passage. Physical Review B, 95 (16). p. 161302.

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Official URL: http://edoc.unibas.ch/58240/

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Abstract

A biexciton in a semiconductor quantum dot is a source of polarization-entangled photons with high potential for implementation in scalable systems. Several approaches for nonresonant, resonant, and quasiresonant biexciton preparation exist, but all have their own disadvantages; for instance, low fidelity, timing jitter, incoherence, or sensitivity to experimental parameters. We demonstrate a coherent and robust technique to generate a biexciton in an InGaAs quantum dot with a fidelity close to 1. The main concept is the application of rapid adiabatic passage to the ground-state–exciton–biexciton system. We reinforce our experimental results with simulations which include a microscopic coupling to phonons.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Physics (Warburton)
UniBasel Contributors:Warburton, Richard J and Kaldewey, Timo
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
ISSN:2469-9950
e-ISSN:2469-9969
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:15 Jan 2018 10:21
Deposited On:15 Jan 2018 10:21

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