||In this paper, we study a general linear networked system that contains
a tunable memory subsystem;
that is, it is decoupled from an optical field for state transportation during
the storage process, while it couples to the field during the writing or
The input is given by a single photon state or a coherent state in a pulsed
We then completely and explicitly characterize the condition required on
the pulse shape achieving the perfect state transfer from the light field
to the memory subsystem.
The key idea to obtain this result is the use of zero-dynamics principle,
which in our case means that, for perfect state transfer, the output field
during the writing process must be a vacuum.