  The radical departure from classical physics implies quantum coherence, i.e.,
coherent superposition of eigenstates of Hermitian operators with a discrete
spectrum. In resource theory, quantum coherence is a resource for quantum
operations. Typically the stochastic phenomenon induces decoherence effects.
However, in the present work, we prove that nonunitary evolution leads to the
generation of quantum coherence in some cases. Specifically, we consider the
neutrino propagation in the dissipative environment, namely in a magnetic field
with a stochastic component, and focus on neutrino flavor, spin and spin-flavor
oscillations. We present exact analytical results for quantum coherence in
neutrino oscillations quantified in terms of the relative entropy. Starting
from an initial zero coherence state, we observe persistent oscillations of
coherence during the dissipative evolution. We found that after dissipative
evolution, the initial spin-polarized state entirely thermalizes, and in the
final steady state, the spin-up/down states have the same probabilities. On the
other hand, neutrino flavor states also thermalize, byt the populations of two
flavor states do not equate to each other. The initial flavor still dominates
in the final steady state
