  We propose a device that allows for the emission of pairs of spin-polarized
electrons into the edge-states of a two dimensional topological insulator.
Charge and spin emission is achieved using a periodically driven quantum dot
weakly coupled to the edge states of the host topological insulator. We present
calculations of the emitted time-dependent charge and spin currents of such a
dynamical scatterer using the Floquet scattering matrix approach. Experimental
signatures of spin-polarized two-particle emission can be found in noise
measurements. Here a new form of noise suppression, named
$\mathbb{Z}_2$--antibunching, is introduced. Additionally, we propose a set-up
in which entanglement of the emitted electrons is generated. This entanglement
is based on a post-selection procedure and becomes manifest in a violation of a
Clauser-Horne-Shimony-Holt inequality.
