Physics – Quantum Physics
Scientific paper
2007-02-19
Found. Phys. 37, 295 (2007)
Physics
Quantum Physics
18 pages, 1 figure
Scientific paper
10.1007/s10701-006-9102-8
We report on the simultaneous determination of complementary wave and particle aspects of light in a double-slit type "welcher-weg" experiment beyond the limitations set by Bohr's Principle of Complementarity. Applying classical logic, we verify the presence of sharp interference in the single photon regime, while reliably maintaining the information about the particular pinhole through which each individual photon had passed. This experiment poses interesting questions on the validity of Complementarity in cases where measurements techniques that avoid Heisenberg's uncertainty principle and quantum entanglement are employed. We further argue that the application of classical concepts of waves and particles as embodied in Complementarity leads to a logical inconsistency in the interpretation of this experiment.
Afshar Shahriar S.
Flores Eduardo
Knoesel Ernst
McDonald Keith F.
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