The Mach-Zehnder interferometer and photon dualism

Paul A. Klevgard, Joseph A. Shaw, Katherine Creath, Vasudevan Lakshminarayanan
2020 Light in Nature VIII  
The Mach-Zehnder Interferometer (MZI) is used to illustrate the long-standing wave-particle duality problem. How can the photon divide at the first beam splitter and yet terminate on either arm with its undiminished energy? Why is which-way (welcher weg) information incompatible with wave interference? How do we explain Wheeler's delayed choice experiment? The position adopted is that the photon has two identities, one supporting particle features and the other wave features. There is photon
more » ... There is photon kinetic energy that never splits (on half-silvered mirrors) or diffracts (in pinholes or slits). Then there is photon probability waves that do diffract and can reinforce or cancel. Interpretations of these two identities are suggested.
doi:10.1117/12.2575213 fatcat:vky7yjgcfzbrxfsitz35y6zllm