config.py

mu1, mu2, mu3 = .0007, .1, .4 #intensities alice can choose from
p3,p2 = .6, .2
p1 = 1-p2-p3				#probabability of choosing each intensity
intensities = ([mu1,mu2,mu3], [p1,p2,p3])
N = int(1e9) 				#number of iterations simulator runs for

pza = .5	#probability of alice choosing Z basis (should always be .5 for this protocol)
bases = ([0,1], [pza, 1-pza]) 

alpha = .15 #transmittance of channels
length = 1	#length of channels
tAB = 10 ** -((alpha*length)/10)
eta_det = .1 #detector effeciency
t_bob = .1	 #transmittance of bobs devices
eta_bob = t_bob*eta_det	#overall efeciency of bobs apparatus
noise = .05	#additional noise in channel (to simulate an attack)

Y0 = 1e-5	#dark count rate
eta = tAB*eta_bob #overall effeciency 
e0 = .5	#error rate for dark count
edetect = 1e-3	#probability a photon hits the wrong detector (due to misalignment e.g.)
pdouble = 1e-3	#probablity of a double click
bob_params = [Y0, eta, e0, edetect, pdouble, noise]

pzb = .5 	#probablity of bob chossing Z basis (should always be .5 for this protocol)
bob_bases = [[0,1],[pzb, 1-pzb]]