Coherent population trapping by dark state formation in a carbon nanotube quantum dot

URN to cite this document:: urn:nbn:de:bvb:355-epub-382945
DOI to cite this document:: 10.5283/epub.38294

Donarini, Andrea

; Niklas, Michael ; Schafberger, Michael ; Paradiso, Nicola

; Strunk, Christoph

; Grifoni, Milena

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Date of publication of this fulltext: 04 Feb 2019 10:16

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Abstract

Illumination of atoms by resonant lasers can pump electrons into a coherent superposition of hyperfine levels which can no longer absorb the light. Such superposition is known as a dark state, because fluorescent light emission is then suppressed. Here we report an all-electric analogue of this destructive interference effect in a carbon nanotube quantum dot. The dark states are a coherent ...