Quantum statistical signature of $\mathcal{PT}$ symmetry breaking

Understand

In multiparticle quantum interference, bosons show rather generally the tendency to bunch together, while fermions can not.

• This behavior, which is rooted in the different statistics of the particles, results in a higher coincidence rate $P$ for fermions than for bosons, i.e.
• $P^{(bos)}<P^{(ferm)}$.
• However, in lossy systems such a general rule can be violated because bosons can avoid lossy regions.