  Resonant excitation of the biexciton state in an InAsP quantum dot by a
phase-coherent pair of picosecond pulses allows for preparing time-bin
entangled pairs of photons via the biexciton-exciton cascade. We show that this
scheme can be efficiently implemented for a dot embedded in an InP nanowire.
The underlying physical mechanisms can be represented and quantitatively
analyzed by an effective three-level open system master equation. Simulation
parameters including decay and intensity depending dephasing rates are
extracted from experimental data, which in turn allow for predicting the
resulting entanglement and finding optimal operating conditions.
