  We derive the stochastic master equations, that is to say, quantum filters,
and master equations for an arbitrary quantum system probed by a
continuous-mode bosonic input field in two types of non-classical states.
Specifically, we consider the cases where the state of the input field is a
superposition or combination of: (1) a continuous-mode single photon wave
packet and vacuum, and (2) any number of continuous-mode coherent states.
