Beth Parks coauthored a quantum treatment of beam splitters with Charles H. Holbrow and Enrique Galvez. Describing the device requires complex probability amplitudes and their relative quantum phases, not only the fraction of power sent to each output. A unitary matrix transforms the input optical modes into the output modes, connecting single-photon detection probabilities with experiments involving correlated photons. This gives an experimental device a common mathematical description across several quantum-optics demonstrations.[ref]
Photon quantum mechanics and beam splitters by Charles H. Holbrow and others. Section IV.A, p. 262, beam-splitter mode transformation and phase conventions
A physicist.[ref]
https://www.colgate.edu/about/directory/meparks. Directory title and appointment; research paragraph; Publications lists the exact 2002 article under M. E. Parks
Portrait of Beth Parks
. Image identified on the institutional profile.
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