  This paper studies a scheme of two spatially distant oscillator systems that
are connected by Gaussian fields and examines distributed entanglement
generation between two continuous-mode output Gaussian fields that are radiated
by the oscillators. It is demonstrated that using measurement-feedback control
while a non-local effective entangling operation is on can help to enhance the
Einstein-Podolski-Rosen (EPR)-like entanglement between the output fields. The
effect of propagation delays and losses in the fields interconnecting the two
oscillators, and the effect of other losses in the system, are also considered.
In particular, for a range of time delays the measurement feedback controller
is able to maintain stability of the closed-loop system and the entanglement
enhancement, but the achievable enhancement is only over a smaller bandwidth
that is commensurate with the length of the time delays.
