Coupled 'electron interferometers': entanglement, dephasing, and phasing

Experiments involving entangling of particles (or systems) may lead either to decoherence, or, alternatively, to coherent interference. I will present three examples of mesoscopic systems, which consist of a two-path electronic Mach-Zehnder interferometer (MZI) coupled to:  (a) 1-d current carrying channel, with shot noise; (b) Fabry-Perot interferometer in a form of a quantum dot (QD); and (c) Another MZI, revealing two-particle interference. In (a), 'post selection' measurement (cross-correlation' of current fluctuations), will recover the lost interference due to the dephasing process.