Atomic retrodiction

Stephen M. Barnett, D.T. Pegg, J. Jeffers, O. Jedrkiewicz

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Measurement of a quantum system provides information concerning the state in which it was prepared. In this paper we show how the retrodictive formalism can be used to evaluate the probability associated with any one of a given set of preparation events. We illustrate our method by calculating the retrodictive density operator for a two-level atom coupled to the electromagnetic field.
Original languageEnglish
Pages (from-to)3047-3065
Number of pages18
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number16
Publication statusPublished - 2000


  • quantum physics
  • optics
  • atoms
  • atomic physics
  • electromagnetic field

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