Generalized Probabilistic Description of Noninteracting Identical Particles
Abstract
We investigate an operational description of identical noninteracting particles in multiports. In particular, we look for physically motivated restrictions that explain their bunching probabilities. We focus on a symmetric 3port in which a triple of superquantum particles admitted by our generalized probabilistic framework would bunch with a probability of 3/4 . The bosonic bound of 2/3 can then be restored by imposing the additional requirement of product evolution of certain input states. These states are characterized by the fact that, much like product states, their entropy equals the sum of entropies of their oneparticle substates. This principle is, however, not enough to exclude the possibility of superquantum particles in higherorder multiports.
 Publication:

Physical Review Letters
 Pub Date:
 February 2018
 DOI:
 10.1103/PhysRevLett.120.080401
 arXiv:
 arXiv:1706.02137
 Bibcode:
 2018PhRvL.120h0401K
 Keywords:

 Quantum Physics
 EPrint:
 6 pages, comments welcome