  I describe the engineered decoherence of a qubit state by means of an
environment formed out of a neurally architected material. Such a material is a
material that can adjust its inner properties in the same way a neural network
is adjusting its weights, subject to a built-in cost function. Such a material
is naturally found in biological structures (like a brain) but can in principle
be engineered at a microscopic level. If such a material is used as an
environment for a Nakajima-Zwanzig equation describing the controlled
decoherence of a quantum state, we obtain a modified decoherence that allows
for correlated states to exist longer or even to become robust. Such a neural
material can also be architected to implement certain quantum gate operations
on the encapsulated qubit.
