Fig. 2: Spectroscopy of the electron energy distribution f(ε).
From: Signature of anyonic statistics in the integer quantum Hall regime
The shape of f(ε) reflects the inter-channel coupling regime and informs on the conditions for a complete charge fractionalization at the central QPC. One source is voltage biased at Vs, here with τs ≈ 0.5, and the same probe voltage Vp is applied across the other one (see schematic in a). Circles and triangles show data points with the voltage biased source QPC on the left and right side, respectively. Purple continuous lines and blue dashed lines represent exact theoretical predictions in the strong coupling regime for a time delay between charge and neutral pairs of δt = 64 ps and ∞, respectively (see Supplementary Information). Insets: Cross-correlations S12 versus probe voltage Vp. Main panels: f(ε) obtained by differentiation of S12, see Eq. (1), with τc ≃ 0.5. a–c: Data and theory at T ≃ 11 mK for a source voltage Vs = 23 μV, 35 μV, and 70 μV, respectively.
