Fig. 1. Notation relating to Young’s double-slit interference experiment

Fig. 2 (color). Color-coded plot of the relative mean frequency ω̅(u_N ,z_N ) of the spectrum in the interference field as a function of u_N and z_N . The color is more red or blue as the spectrum is more redshifted or blueshifted, respectively. The parameters are chosen as ε = 0.95 ω ₀ = 10¹⁵s^-1 and Γ = 0.0ω ₀.

Fig. 3 The relative mean frequency as a function of the spectral width (Γ) of the incident light. The parameters are chosen as ε = 0.95 , ω ₀ = 10¹⁵s^-1 , z_N = 15 and u_N = 3.82 .

Fig. 4. The spectral shifts are represented by the color marks. The more red or more blue indicates the spectrum more redshifted or more bluedshifted. (a) Γ = 0.01ω ₀ (b) Γ = 0.2ω ₀ . Other parameters are ε = 0.95 , ω ₀ = 10¹⁵s^-1, z_N = 15 . The arrows indicate the positions at which the spectral detector is placed for measuring the spectra. v_N = v/a.

Fig. 5 The relative mean frequency as a function of the relative coherence ∆₀ . Γ = 0.01ω ₀ (solid curve), Γ = 0.02ω ₀ (dashed curve) The parameters are chosen as ε = 0.95 , ω ₀ = 10¹⁵s^-1, z_N = 15 and u_N = 3.82 .

Fig. 6. Illustration for the information (data) encoding and information transmission by controlling the spectral width of the incident light. The blueshift (B, in short) could be associated with a bit of information such as a “1”, and the redshift (R, in short) could be associated with “0”. The observation point is at z_N = 15 and u_N = 3.82. Γ is the spectral width of the incident spatial completely coherent light.

Fig. 7. Illustration for the information (data) encoding and information transmission by modulating spatial coherence of the incident light. The blueshift (B, in short) could be associated with a bit of information such as a “1”, and the redshift (R, in short) could be associated with “0”. The observation point is at z_N = 15 and u_N = 3.82 . ∆₀ is the normalized spatial correlation distance.