Experimental observation of impossible-to-beat quantum advantage on a hybrid photonic system
arXiv:1203.0980 · doi:10.1103/PhysRevLett.108.090501
Abstract
Quantum resources outperform classical ones for certain communication and computational tasks. Remarkably, in some cases, the quantum advantage cannot be improved using hypothetical postquantum resources. A class of tasks with this property can be singled out using graph theory. Here we report the experimental observation of an impossible-to-beat quantum advantage on a four-dimensional quantum system defined by the polarization and orbital angular momentum of a single photon. The results show pristine evidence of the quantum advantage and are compatible with the maximum advantage allowed using postquantum resources.
REVTeX4, 5 pages, 2 figures
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