Matlab simulation of 'Which-way (Double-slit) experiment with electrons'

I use Matlab to simulate a Gaussian wavepacket passing a double-slit.
If there is no detector near any slit detecting the path of the electron, it will show an interference pattern on the screen.
However, switching on the detectors (set near two slits) will show the bullet trajectory.
#DoubleSlitElectronInterferenceExperiment