  Skyrmionic textures are being extensively investigated due to the occurrence
of novel topological magnetic phenomena and their promising applications in a
new generation of spintronic devices that take advantage of the robust
topological stability of their spin structures. The development of practical
devices relies on a detailed understanding of how skyrmionic structures can be
formed, transferred, detected and annihilated. In this work, our considerations
go beyond static skyrmions and theoretically show that the
formation/annihilation of both skyrmions and antiskyrmions is enabled by the
transient creation and propagation of topological singularities (magnetic
monopole-like Bloch points). Critically, during the winding/unwinding of
skyrmionic textures, our results predict that the Bloch-point propagation will
give rise to an emergent electric field in a terahertz frequency range and with
substantial amplitude. We also demonstrate ways for controlling Bloch-point
dynamics, which directly enable the tuneability on both frequency and amplitude
of this signal. Our studies provide a concept of directly exploiting
topological singularities for terahertz skyrmion-based electronic devices.
