Two feasible energy-correlation experiments with twin photons from parametric down-conversion are proposed. A new method to determine the lower bound of quantum information transfer speed is proposed in the first experiment. Classical information transfer exclusively by means of the quantum channel is the expected result of the second experiment.
The results of a preliminary 'test-of-principle" experiment indicate the possibility of information transfer between spatially disjoint subsystems by means of the quantum channel exclusively.
An experiment is proposed to test the feasibility of useful, classically complete information transfer between distant subsystems by means of the quantum channel alone. A second version of this experiment is proposed as a "gedanken" example of non-commutation of quantum measurements in spatially disjoint correlated subsystems.
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