Operational approach to the Uhlmann holonomy

Johan Aberg, David Kult, Erik Sjoqvist, Daniel K.L. Oi

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16 Citations (Scopus)


We suggest a physical interpretation of the Uhlmann amplitude of a density operator. Given this interpretation we propose an operational approach to obtain the Uhlmann condition for parallelity. This allows us to realize parallel transport along a sequence of density operators by an iterative preparation procedure. At the final step the resulting Uhlmann holonomy can be determined via interferometric measurements.

Original languageEnglish
Pages (from-to)032106
Number of pages7
JournalPhysical Review A
Issue number3
Publication statusPublished - Mar 2007


  • mixed states
  • phase
  • Uhlmann holonomy
  • Uhlmann amplitude

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