The sensitivity of plasmon polaritons is controlling at the interface between a gain assisted dielectric medium and a nanocomposite material. The sensitivity can be tuned by adjusting system and driven fields parameters. The peak sensitivity value is recorded to 6000 \(\theta /RIU\) against the control fields Rabi frequencies ( \(\Omega _{1,c}/\Gamma\) , at point \(\Omega _1\) = 7 \(\Gamma\) and \(\Omega _c\) = 1 \(\Gamma\) ). The small value of sensitivity is noted to be 252 \(\theta /RIU\) with decay rate \(\Gamma _{(ab)}/\Gamma\) ( \(\Gamma _{(ab)}\) = 0.2 \(\Gamma\) ). The reported sensitivity of plasmon polaritons against probe field detuning and control field Rabi frequency is reported to 4000 \(\theta /RIU\) ( \(\Delta _{p}\) = 0 \(\Gamma\) and \(\Omega _c\) = 9 \(\Gamma\) , 10 \(\Gamma\) and 13 \(\Gamma\) ). These results have impact a range of areas, such as data-storage technologies, photovoltaic (solar cell) devices, biosensing platforms, plasmonic research and sensor development.
