  The photon blockade effect is commonly exploited in the development of
single-photon sources. While the photon blockade effect could be used to
prepare high-fidelity single-photon states in idealized regimes, practical
implementations in optomechanical systems suffer from an interplay of competing
processes. Here we derive a control scheme that exploits destructive
interference of Fock state amplitudes of more than one photon. The resulting
preparation time for photon-blockaded quantum states is limited only by the
optomechanical interaction strength and can thus be orders of magnitude shorter
than in existing schemes that achieve photon-blockaded state in the steady
state.
