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

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Donarini, Andrea ; Niklas, Michael ; Schafberger, Michael ; Paradiso, Nicola ; Strunk, Christoph ; Grifoni, Milena
Date of publication of this fulltext: 04 Feb 2019 10:16


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 ...


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