  The development of quantum technologies depends on investigating of the
behavior of quantum systems in noisy environments, since complete isolation
from its environment is impossible to achieve. In this paper we show that a
wave-particle duality experiment performed in a system with an arbitrarily
white noise level cannot be explained in classical terms, using
hidden-variables models. In the light of our results, we analyze recent optical
and NMR experiments and show that a loophole on non-locality is not
fundamental.
