TITLE:
Modified Two-Slit Experiments and Complementarity
AUTHORS:
Tabish Qureshi
KEYWORDS:
Complementarity; Wave-Particle Duality; Two-Slit Experiment
JOURNAL NAME:
Journal of Quantum Information Science,
Vol.2 No.2,
June
22,
2012
ABSTRACT: Some modified two-slit interference experiments claim to demonstrate a violation of Bohr’s complementarity principle. A typical such experiment is theoretically analyzed using wave-packet dynamics. The flaw in the analysis of such experiments is pointed out and it is demonstrated that they do not violate complementarity. In addition, it is quite generally proved that if the state of a particle is such that the modulus square of the wave-function yields an interference pattern, then it necessarily loses which-path information.