Scientists from the University of Cambridge have managed to render impossible for quantum physics: discreetly tracking of quantum particles. They have obtained a positive outcome due to measuring their interaction with the external world.

One of the hypothesis of the quantum theory says that quanta can exist as ways and as particles (wave-particle duality). Besides, one can’t find out their current states without measuring. Proof of that is Erwin Schrödinger's well-known experiment involving a dead-or-maybe-not-dead cat in a box.

Until now, this function has been described mathematically, thus David Arvidsson-Shukur together with his colleagues have tried to trace unseen movements of quantum particles.

Authors of modern physics have failed to answer what a particle does when it is tracked. Cambridge scientists suggest that any moving particle in space interacts with surrounding environment. The results of interactions (tagging) encoded in particles can be deciphered at the end, while measuring a particle.

Eventually, they have noted that tagging information is directly related to the wave function previously considered to be a conditional calculation tool for predicting quanta experiment results.

"Our experiment suggests that the wave function is closely related to the actual state of particles. So, we have been able to explore the ‘forbidden domain’ of quantum mechanics: pinning down the path of quantum particles when no one is observing them," Arvidsson-Shukur said.