Classical and Quantum Surface Plasmon Resonance Biosensing

Figure 11

(a) A comparison of with . We see enhancement when Fock states are used versus the coherent state. (a) In this scenario, the resonance angle is fixed, and the analyte’s refractive index is detected. The analyte has a refractive index of 1.39. (b) In this scenario, both the refractive index and the resonance angle of the analyte being sensed are set. Refractive index is 1.39, and the resonance angle is . The coherent state is represented by the black line, and the Fock state by the red line. In the plot, it is assumed that there is no system loss in the setup, that is, . Photon number N =  = 10. (c) Enhancement ratio . (d) Case in which the index of refraction of the analyte that is detected is fixed while the resonance angle is changed. The refractive index is 1.39 (b) in this scenario, the resonance angle of the analyte being sensed is fixed, and the index of refraction changes. The resonance angle is . In the plots, it is assumed that there is no loss in the setup, that is, . Photon number, N =  = 10. This was taken from referecne [40].

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