  Integrating conventional superconductors with common III-V semiconductors
provides a versatile platform to implement tunable Josephson junctions (JJs)
and their applications. We propose that with gate-controlled time-dependent
spin-orbit coupling, it is possible to strongly modify the current-phase
relations and Josephson energy and provide a mechanism to drive the JJ
dynamics, even in the absence of any bias current. We show that the transition
between stable phases is realized with a simple linear change in the strength
of the spin-orbit coupling, while the transition rate can exceed the
gate-induced electric field GHz changes by an order of magnitude. The resulting
interplay between the constant effective magnetic field and changing spin-orbit
coupling has direct implications for superconducting spintronics, controlling
Majorana bound states, and emerging qubits. We argue that topological
superconductivity, sought for fault-tolerant quantum computing, offers simpler
applications in superconducting electronics and spintronics.
