Coupling Remote States through the Continuum: Multi-State Fano Resonances

Details Coupling Remote States through the Continuum: Multi-State Fano Resonances Coupling Remote States through the Continuum: Multi-State Fano Resonances

2009-11-14

arxiv.org/abs/0911.2742v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We demonstrate a fully-tunable multi-state Fano system in which remotely-implemented quantum states interfere with each other through their coupling to a mutual continuum. On tuning these resonances near coincidence a robust avoided crossing is observed, with a distinctive character that confirms the continuum as the source of the coupling. While the continuum often serves as a source of decoherence, our work therefore shows how its presence can instead also be essential to mediate the interaction of quantum states, a result that could allow new approaches to engineer the collective states of nanostructures.

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