Tunneling Electrons Triggered Energy Transfer between Coherently Coupled Donor-Acceptor Molecules

Figure 1. Dephasing assisted energy transfer between coherently coupled donor-acceptor molecules.

Figure 2. Resonant and non-resonant energy transfer between coherently coupled donor-acceptor molecules. (a) Schematic of tunneling electrons triggered energy transfer in the plasmonic nanocavity (PNC) coupled donor-acceptor molecules system. (b, c) Time dependent populations of the PNC, donor and acceptor molecules, respectively, after the donor molecule is initially excited. For (b, c), ${\omega }_{\textrm{D}}=2.00$ eV, ${\omega }_{\textrm{PNC}}=2.00$ eV, ${g}_{\textrm{D-A}}=-0.023$ eV, ${g}_{\textrm{D-PNC}}={g}_{\textrm{A-PNC}}=0.010$ eV, ${\gamma }_{\textrm{D}}^{\textrm{total}}=0.007$ eV, ${\gamma }_{\textrm{A}}^{\textrm{total}}=0.007$ eV, ${\gamma }_{\textrm{PNC}}^{\textrm{total}}=0.120$ eV, ${\gamma }_{\textrm{D}}^{\textrm{deph}}=0.000\ {\rm{eV}}$, ${\gamma }_{\textrm{A}}^{\textrm{deph}}=0.000\ {\rm{eV}}$; for (b), ${\omega }_{\textrm{A}}=2.00$ eV; and for (c), ${\omega }_{\textrm{A}}=1.96$ eV.

Figure 3. PNC coupling strength dependent energy transfer in the PNC coupled donor-acceptor molecules system. (a–c) Time dependent populations and (d–f) emission intensities of the PNC, donor and acceptor molecules, respectively, after the donor molecule is initially excited. For (a–f), ${\omega }_{\textrm{D}}=2.0$ eV, ${\omega }_{\textrm{A}}=1.96$ eV, ${\omega }_{\textrm{PNC}}=2.0$ eV, ${g}_{\textrm{D-A}}=-0.023$ eV, ${\gamma }_{\textrm{D}}^{\textrm{total}}=0.007$ eV,${\gamma }_{\textrm{A}}^{\textrm{total}}=0.007$ eV, ${\gamma }_{\textrm{PNC}}^{\textrm{total}}=0.120$ eV, ${\gamma }_{\textrm{D}}^{\textrm{deph}}=0.000\ {\rm{eV}}$, ${\gamma }_{\textrm{A}}^{\textrm{deph}}=0.000\ {\rm{eV}}$; for (a, d), ${g}_{\textrm{D-PNC}}={g}_{\textrm{A-PNC}}=0.010$eV, for (b, e), ${g}_{\textrm{D-PNC}}={g}_{\textrm{A-PNC}}=0.020$ eV, and for (c, f), ${g}_{\textrm{D-PNC}}={g}_{\textrm{A-PNC}}=0.040$ eV. The emission intensities of the donor and acceptor molecules in (d, e, f) are multiplied by 3750 for display.

Figure 4. Fano resonance of coherently coupled donor-acceptor molecules.

Figure 5. Polariton-mediated energy transfer between donor and acceptor molecules in a strongly coupled PNC.