Master equation for retrodiction of quantum communication signals

Stephen M. Barnett, David T. Pegg, John Jeffers, Ottavia Jedrkiewicz

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)
31 Downloads (Pure)


We derive the master equation that governs the evolution of the measured state backwards in time in an open system. This allows us to determine probabilities for a given set of preparation events from the results of subsequent measurements, which has particular relevance to quantum communication.
Original languageEnglish
Pages (from-to)2455-2458
Number of pages3
JournalPhysical Review Letters
Issue number11
Publication statusPublished - Mar 2001


  • master equation
  • quantum physics
  • quantum communication
  • measurement
  • optics
  • photonics


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