Radu Ionicioiu, Thomas Jennewein, Robert B. Mann, Daniel R. Terno
We describe a new class of experiments designed to probe the foundations of quantum mechanics. Using quantum controlling devices, we show how to attain a freedom in temporal ordering of the control and detection of various phenomena. We consider wave-particle duality in the context of quantum-controlled and the entanglement-assisted delayed-choice experiments. In the absence of superluminal communication, realism (de?ned as a property of photons being either particles or waves, but not both) is incompatible with determinism in a broad class of hidden-variable theories. We further show that, contrary to the standard Bohr complementarity, the complementary properties can be measured in a single experiment, provided that a component of the apparatus is a quantum object in a state of superposition. We discuss several recent experiments and indicate future applications.
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http://arxiv.org/abs/1301.6969
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