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- Quantum field Theory gives each Fermion and boson its own field, which can be in different quantum states.. what does that mean for the uncertainty of particle number applied to atoms?

I know precious little about quantum field theory, but want to understand the following.

If each Fermion and Boson has its own field..

..and as an example, the EM field can be in a coherent state, which is a superposition over many photon number states..

.. then can a fermion field, or multiple fermion fields be in a similar superposition?

If the answer to all of these is yes, then can the quantum state of a marble made of quintillions of atoms actually be in a superposition of having different numbers of atoms, or is there some physical reason that forces such objects to have an exact, but very large number of fermions?

If each Fermion and Boson has its own field..

..and as an example, the EM field can be in a coherent state, which is a superposition over many photon number states..

.. then can a fermion field, or multiple fermion fields be in a similar superposition?

If the answer to all of these is yes, then can the quantum state of a marble made of quintillions of atoms actually be in a superposition of having different numbers of atoms, or is there some physical reason that forces such objects to have an exact, but very large number of fermions?