  The quantum vacuum is unstable under the influence of an external electric
field and decays into pairs of charged particles, a process which is known as
the Schwinger pair production. We propose and demonstrate that this electric
field can generate entanglement. Using the Schwinger pair production for
constant and pulsed electric fields, we study entanglement for scalar particles
with zero spins and Dirac fermions. One can observe the variation of the
entanglement produced for bosonic and fermionic modes with respect to different
parameters.
