Quantum Hall realization of polarized intensity interferometry

We combine the ideas of intensity interferometry, polarization optics and Bells measurement into an exper- imental proposal which is hosted in a {\nu} = 2 quantum Hall (QH) edge state. Our interferometer comprises of a single quantum point contact (QPC). An analog of waveplate (from polarization optics) is realized by ex- posing the individual edges to nano-magnets over a finite length which facilitates coherent manipulation of the electron spin on the edge. We show that the in-plane rotation of magnetization direction of the nano-magnets results in oscillations observed solely in the cross-correlated noise which is purely due to two particle inter- ference. Through numerical simulations we demonstrate that our proposal is well within the reach of recent experimental developments of spin manipulations on the QH edge.