Nonlocal bunching of composite bosons

Abstract

It was suggested that two entangled fermions can behave like a single boson and that the bosonic quality is proportional to the degree of entanglement between the two particles. The relation between bosonic quality and entanglement is quite natural if one takes into account the fact that entanglement appears in bound states of interacting systems. However, entanglement can still be present in spatially separated subsystems that do not interact anymore. These systems are often a subject of studies on quantum nonlocality and foundations of quantum physics. Here, we ask whether an entangled spatially separated fermionic pair can exhibit bosonic properties. We show that in certain conditions the answer to this question can be positive. In particular, we propose a nonlocal bunching scenario in which two such pairs form an analogue of a two-partite bosonic Fock state.

6 pages, 2 figures, comments welcome

References in corpus (6)

• Bosonic behavior of entangled fermions
• Effects of fermion exchanges on the polarization of exciton condensates
• Collective interference of composite two-fermion bosons
• Energy dependence of the entanglement entropy of composite boson (quasiboson) systems
• Influence of the Pauli exclusion principle on scattering properties of cobosons
• Statistical signatures of states orthogonal to the Fock-state ladder of composite bosons