  We combine the ideas of intensity interferometry, polarization optics and
Bell's measurement into an experimental proposal which is hosted in a
$\nu\,$=$\,2$ quantum Hall (QH) edge state. Our interferometer comprises of a
single gate, that separates the spin resolved edge states of $\nu$\,=\,$2$
state. An analog of waveplate (from polarization optics) is realized by
exposing 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
arises from two particle interference. Through numerical simulations we
demonstrate that our proposal is well within the reach of recent experimental
developments of spin manipulations on the QH edge.
