Suppose a source emits silver atoms, which are sent through
three different types of Stern-Gerlach devices, each of them is either sorting
the atoms along the x, y or z axis. If we preform a measurement along the
z or y axis, the atoms are sorted in the ” + ” direction with probability 3/8,
while if we sort along the x axis, the ” + ” direction occurs with probability
Find the density operator of this source
Can someone help me get started? How do I find out what the source is composed of?