Finding quantum ‘lines of desire’: Physicists track quantum system’s wanderings through quantum state space

30 julio 2014

What paths do quantum particles, such as atoms or photons, follow through quantum state space? Scientists have used an «artificial atom» to continuously and repeatedly record the paths through quantum state space. From the cobweb of a million paths, a most likely path between two quantum states emerged, much as social trails emerge as people round off corners or cut across lawns between buildings.