  Shahriar S. Afshar claimed that his 2007 modified version of the double-slit
experiment violates complementarity [1]. He makes two modifications to the
standard double-slit experiment. First, he adds a wire grid that is placed in
between the slits and the screen at locations of interference minima. The
second modification is to place a converging lens just after the wire grid. The
idea is that the wire grid implies the existence of interference
minima(wave-like behavior), while the lens can simultaneously obtain which-way
information (particle-like behavior). More recently, John G. Cramer [2] argued
that the experiment bolstered the Transactional Interpretation of Quantum
mechanics (TIQM). His argument scrutinizes Bohr's complementarity in favor of
TIQM. We analyze this experiment by simulation using the path integral
formulation of quantum mechanics [3] and find that it agrees with the wave
particle duality relation given by Englert, Greenberg and Yasin (E-G-Y) [4, 5].
We conclude that the use of Afshar's experiment to provide a testbed for
quantum mechanical interpretations is limited.
