Joint effects of entanglement and symmetrization: Physical properties and exclusion

Revisiting entanglement-induced exclusion

“…We consider the same arrangement described in [5]. It is based on the absorption properties of two identical atoms generated in the photodissociation of molecules by light in a superposition state.…”

“…To prepare the atoms this way the molecule must interact with light in a superposition state, giving rise each term in the superposition to a different dissociation process. As explained in [5] this can be achieved dividing the light beam with a beam splitter and then having different incident directions on the molecule. The states after the dissociation for distinguishable and identical atoms are respectively…”

“…More recently, another two aspects of the above interplay has been discussed in the literature. The first one is the analysis of the joint effects of entanglement and symmetrization in atomic systems when both are simultaneously relevant [5]. In that reference the absorption rates of identical atoms in a symmetrized multi-atom superposition were compared with those of a mixture for several values of the spatial overlap between the atoms.…”

“…We must use different criteria, not based on the one-particle states of the multi-fermion system, to determine potential excluded states [7]. Interestingly, in [5] a realistic example of nonstandard excluded state was found.…”

“…A second modification is related to the control parameters in the problem. In [5] the absorption rates were presented as a function of the overlap between different spatial states of the atoms. Here, instead, the control parameters will be the coefficients of the multifermion superposition (determining the entanglement degree).…”