Fig. 3: Wigner functions of the ultrafast squeezed light pulses.
From: Attosecond quantum uncertainty dynamics and ultrafast squeezed light for quantum communication
a, b The optimization results for the IR-VIS and UV-VIS datasets as a function of the number of modes. The dashed curves indicate the absolute error between the theoretical and experimental variances for intensity (in red) and phase (in black). For reference, the experimental variances are represented by solid lines in corresponding colors. c, d The Wigner functions of the resulting squeezed states for the IR-VIS and UV-VIS measurements (for \(N=1))\), respectively. In these plots, x and p represent the optical quadrature, and for representational purposes, the distributions have been rotated by 45° relative to the p-axis
