@MPN IM
- The value that intensity modulator modulates the optical signal mean photon number into. If there's decoy and vacuum state, see @DECOY_PARAMS
- Mean photon number: Determine by bringing in the poisson distribution formula.
- Is store as MPN in the fortran code.
example
@MPN 0.1
Which mean the system has one laser, and it mean photon number is 0.1.