Fig. 2. Two-particle interferometry in the IQHE regime.

a DC conductance trace versus gate voltage is used to measure the transmission and reflection of the inner edge channel while the outer edge channel is transmitted at filling factor ν = 2. The vertical dashed lines denote the working points used here. b DC Cross-correlated noise ($-S_{I_3{I}_4}$) data (blue circles) versus DC voltage bias $V_{DC}$ and comparison with Eq. (4) for transmission D = 0.89 and temperature 40 mK (red dashed line). The expected statistical error is ±4.2 × 10⁻³⁰ A²/Hz for 1.5 s measurement time per DC voltage bias point. c, d Blue and black circles data points show the shot noise measured versus the time delay for 14.15 GHz microwave excitation and RF source powers 5 and 8 dB, respectively. The dashed red curves provide a comparison with the heuristic model given by Eq. (3), including the noise offset S_M. The statistical noise errors error bars are expected ±3.10⁻³⁰ A²/Hz for 3 s measurement time.