Directly observing momentum transfer in twin-slit "which-way" experiments

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Author(s)
Wiseman, HM
Griffith University Author(s)
Year published
2003
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Is the destruction of interference by a which-way measurement due to a random momentum transfer Weierstrass pgreater-than or equivalent toplanck constant over two pi/s, with s the slit separation? The weak-valued probability distribution Pwv(Weierstrass p), which is directly observable, provides a subtle answer. Pwv(Weierstrass p) cannot have support on the interval [-planck constant over two pi/s,planck constant over two pi/s]. Nevertheless, its moments can be identically zero.Is the destruction of interference by a which-way measurement due to a random momentum transfer Weierstrass pgreater-than or equivalent toplanck constant over two pi/s, with s the slit separation? The weak-valued probability distribution Pwv(Weierstrass p), which is directly observable, provides a subtle answer. Pwv(Weierstrass p) cannot have support on the interval [-planck constant over two pi/s,planck constant over two pi/s]. Nevertheless, its moments can be identically zero.
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Journal Title
Physics Letters. Section A: General, Atomic and Solid State Physics
Volume
311
Issue
4-5
Publisher URI
Copyright Statement
© 2003 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Subject
Mathematical sciences
Physical sciences