Extended Data Fig. 1: Shot noise at integer bulk vb = 1 with symmetric and asymmetric QPC.
From: Shot noise does not always provide the quasiparticle charge
a, Downstream current noise (Si) at bulk filling factor vb = 1 for the regular case, that is, when both the upper and lower modes are \(\nu _{{{{\mathrm{int}}}}}^{{{{\mathrm{l}}}},{{{\mathrm{u}}}}} = 1\). Fano factor is F = 0.93. b, Si when the partitioned edge is \(1_{{{\mathrm{b}}}} - 2/3_{{{\mathrm{g}}}} = 1/3_{{{{\mathrm{int}}}}}\), and the QPC is asymmetric with \(\nu _{{{\mathrm{g}}}}^{{{\mathrm{l}}}} \ne \nu _{{{\mathrm{g}}}}^{{{\mathrm{u}}}}\) and \(\nu _{{{\mathrm{g}}}}^{{{\mathrm{u}}}}\) not quantized. Obtained F = 1, with an accuracy of ±0.05. The electron temperature is slightly higher (about 3–4 mK) than the fridges’ base temperature.
