  We construct quantum coherence resource theories in symmetrized Fock space
(QCRTF), thereby providing an information-theoretic framework that connects
analyses of quantum coherence in discrete-variable (DV) and continuous variable
(CV) bosonic systems. Unlike traditional quantum coherence resource theories,
QCRTF can be made independent of the single-particle basis and allow to
quantify coherence within and between particle number sectors. For example,
QCRTF can be formulated in such a way that neither Bose-Einstein condensates
nor Heisenberg-Weyl coherent states are considered as quantum many-body
coherence resources, whereas spin-squeezed and quadrature squeezed states are.
The QCRTF framework is utilized to calculate the optimal asymptotic
distillation rate of maximally correlated bosonic states both for particle
number conserving resource states and resource states of indefinite particle
number. In particular, we show how to generate a uniform superposition of
maximally correlated bosonic states from a state of maximal bosonic coherence
with asymptotically unit efficiency using only free operations in the QCRTF.
