  Voltage controlled magnetic anisotropy (VCMA) is a low-energy alternative to
manipulate the ferromagnetic state, which has been recently considered also in
antiferromagnets (AFMs). Here, we theoretically demonstrate that VCMA can be
used to excite linear and parametric resonant modes in easy-axis AFMs with
perpendicular anisotropy, thus opening the way for an efficient electrical
control of the Neel vector, and for detection of high-frequency dynamics. Our
work leads to two key results: (i) VCMA parametric pumping experiences the
so-called exchange enhancement of the coupling efficiency and, thus, is 1-2
orders of magnitude more efficient than microwave magnetic fields or
spin-orbit-torques, and (ii) it also allows for zero-field parametric
resonance, which cannot be achieved by other parametric pumping mechanisms in
AFMs with out-of-plane easy axis. Therefore, we demonstrate that the VCMA
parametric pumping is the most promising method for coherent excitation and
manipulation of AFM order in perpendicular easy-axis AFMs.
