Circuit theory for noise in incoherent normal-superconducting structures

P Virtanen, T T Heikkilä
2006 New Journal of Physics  
We consider the current fluctuations in a mesoscopic circuit consisting of nodes connected by arbitrary connectors, in a setup with multiple normal or superconducting terminals. In the limit of weak superconducting proximity effect, simplified equations for the second-order cross-correlators can be derived from the general counting field theory, and the result coincides with the semiclassical principle of minimal correlations. We discuss the derivation of this result in a multi-dot case.
doi:10.1088/1367-2630/8/4/050 fatcat:4ay6zgjhy5fttkecxgdgnn7dqe