  We theoretically explore optical bistability for possible signature of all
optical switching and their performance in a hybrid quantum optomechanical
system comprising of two semiconductor microcavity coupled optically. One of
the cavity is driven by an external optical pump laser while the second cavity
which contains a quantum dot is indirectly driven by light transmitted from the
first cavity. The generated bistable behavior due to optomechanical
nonlinearity shows a typical optical switching behavior and it can be
controlled by changing the laser power, QD cavity coupling, rocking parameter,
and the optomechanical coupling. A clear signature of energy exchange between
mechanical optical modes is visible from the mechanical displacement spectrum.
These results suggest that the present system can be used for an application in
sensitive optical switch and optical sensors.
