We show theoretically that when a semiconductor quantum dot and metallic nanoparticle system interacts with a laser field, quantum coherence can introduce a new landscape for the dynamics of Forster resonance energy transfer (FRET). We predict adsorption of biological molecules to such a hybrid system can trigger dramatic changes in the way energy is transferred, blocking FRET while the distance between the quantum dot and metallic nanoparticle (R) and other structural specifications remain unchanged. We study the impact of variation of R on the FRET rate in the presence of quantum coherence and its ultrafast decay, offering a characteristically different dependency than the standard 1/R6. Application of the results for quantum nanosensors is discussed.
Seyed M. Sadeghi, Brady Hood, and Kira Patty, "Quantum-biological control of energy transfer in hybrid quantum dot-metallic nanoparticle systems," Proc. SPIE 9930, Biosensing and Nanomedicine IX, 99300G (Presented at SPIE Nanoscience + Engineering: August 29, 2016; Published: 27 September 2016); https://doi.org/10.1117/12.2238324.
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