Counting statistics of many-particle quantum walks
K. Ulrich Mayer, Malte C. Tichy, Florian Mintert, Thomas R. Konrad, Andreas Buchleitner · Physical Review A · 2011
We study quantum walks of many noninteracting particles on a beam splitter array as a paradigmatic testing ground for the competition of single- and many-particle interference in a multimode system. We derive a general expression for multimode particle-number correlation functions, valid for bosons and fermions, and infer pronounced signatures of many-particle interferences in the counting statistics.