  We study the concurrence of entanglement between two quantum dots in contact
to Majorana bound states on a floating superconducting island. The distance
between the Majorana states, the charging energy of the island, and the average
island charge are shown to be decisive parameters for the efficiency of
entanglement generation. We find that long-range entanglement with basically
distance-independent concurrence is possible over wide parameter regions, where
the proposed setup realizes a "Majorana entanglement bridge". We also study the
time-dependent concurrence obtained after one of the tunnel couplings is
suddenly switched on, which reveals the timescales for generating entanglement.
Accurate analytical expressions for the concurrence are derived both for the
static and the time-dependent case. Our results indicate that entanglement
formation in interacting Majorana devices can be fully understood in terms of
an interplay of elastic cotunneling (also referred to as "teleportation") and
crossed Andreev reflection processes.
