  We propose a method to couple metastable flux-based qubits to superconductive
resonators based on a quantum-optical Raman excitation scheme that allows for
the deterministic generation of stationary and propagating microwave Fock
states and other weak quantum fields. Moreover, we introduce a suitable
microwave quantum homodyne technique, with no optical counterpart, that enables
the measurement of relevant field observables, even in the presence of noisy
amplification devices.
