Entanglement preparation using symmetric multiports

T. Brougham, V. Kost'ak, I. Jex, E. Andersson, T. Kiss

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5 Citations (Scopus)


We investigate the entanglement produced by a multi-path interferometer that is composed of two symmetric multiports, with phase shifts applied to the output of the first multiport. Particular attention is paid to the case when we have a single photon entering the interferometer. For this situation we derive a simple condition that characterizes the types of entanglement that one can generate. We then show how one can use the results from the single-photon case to determine what kinds of multi-photon entangled states one can prepare using the interferometer.

Original languageEnglish
Pages (from-to)231-236
Number of pages6
JournalEuropean Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Issue number1
Publication statusPublished - Jan 2011


  • quantum theory
  • particle
  • state

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