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Coherent trapping in small quantum networks

Lookup NU author(s): Dr Thomas PopeORCiD

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Abstract

We consider a three-node fully connected network (Delta network) showing that a coherent population trapping phenomenon occurs, generalizing results for the Lambda network known to support a dark state. Transport in such structures provides signatures of detrapping, which can be triggered by external controls. In the presence of an environment it turns out to be sensitive to its Markovianity. Adiabatic modulation of the system's parameters may yield coherent population transfer, analogous to the stimulated Raman adiabatic passage phenomenon. Robustness of this protocol against non-adiabatic transitions is studied. Coherent nanostructures where these phenomena are relevant for quantum transport and quantum protocols are suggested.

Publication metadata

Author(s): Pope TJ, Rajendran J, Ridolfo A, Paladino E, Pellegrino FMD, Falci G

Publication type: Article

Publication status: Published

Journal: Journal of Statistical Mechanics: Theory and Experiment

Year: 2019

Volume: 2019

Online publication date: 27/12/2019

Acceptance date: 24/10/2019

ISSN (electronic): 1742-5468

Publisher: Institute of Physics Publishing Ltd.

URL: https://doi.org/10.1088/1742-5468/ab54b7

DOI: 10.1088/1742-5468/ab54b7

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