Violation of Bohr’s Complementarity: One Slit or Both?

We have implemented a novel double-slit "which-way" experiment which raisesinteresting questions of interpretation. Coherent laser light is passed througha converging lens and then through a dual pinhole producing two beams crossingover at the focal point of the lens, and fully separating further downstreamproviding which-way information. A thin wire is then placed at a minimum of theinterference pattern formed at the cross-over region. No significant reductionin the total flux or resolution of the separated beams is found, providingevidence for coexistence of perfect interference and which-way information inthe same experiment, contrary to the common readings of Bohr's principle ofcomplementarity. This result further supports the conclusions of the originalexperiment by the author in which an imaging lens was employed to obtainwhich-way information. Finally, a short discussion of the novelnon-perturbative measurement technique for ensemble properties is offered.Comment: 6 pages, 4 figures, Vaxjo University Conference, QUANTUM THEORY: Reconsideration of Foundations - 3, January 4, 200