  Topological superconductors host surface Andreev bound states which can be
classified as chiral or helical. Chiral superconductors belong to $Z$ symmetry
class which breaks time-reversal symmetry (TRS) while helical superconductors
belong to $Z_2$ symmetry class which preserves TRS. Chiral and helical
superconductors can be further categorized by the parity-even or odd, of their
order parameter. In this paper using Hanbury Brown and Twiss (HBT) shot noise
correlations and the non-local conductance, we probe metal/unconventional
superconductor/metal junctions in order to better understand the pairing
helical vs chiral in topological superconductors. We also compare these to
non-topological superconductors. Topological superconductors are carriers of
Majorana fermions which are important for topological quantum computation. By
distinguishing chiral superconductors, wherein Majorana bound states (MBS)
persist even in presence of a magnetic field, from helical superconductors
where MBS are fragile, our study will help in the search for stable Majorana
fermions which will be useful for topological quantum computation.
