“The Dirac notation, though originally applied to the propagation of single particles, also applies to describing the propagation of ensembles of coherent, or indistinguishable, photons.”

— F. J. Duarte

in Dirac Optics, [F. J. Duarte, Tunable Laser Optics, Elsevier Academic, 2003, 0-12-222696-8, 25]

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F. J. Duarte 11

Chilean-American physicist 1954

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“The Dirac notation, though originally applied to the propagation of single particles, also applies to describing the propagation of ensembles of coherent, or indistinguishable, photons.”

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F. J. Duarte 11

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