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Quantum Information Processing

, Volume 7, Issue 2–3, pp 55–69 | Cite as

Quantum Shared Broadcasting

  • V. Giovannetti
  • A. S. Holevo
Article

A generalization of quantum broadcasting protocol is presented. Here the goal is to copy an unknown input state into two subsystems which partially overlap. We show that the possibility of implementing these protocols strongly depends upon the overlap among the subsystems. Conditions for approximated shared broadcasting are analyzed.

Keywords

quantum broadcasting entanglement cloning 

PACS

03.67.Hk 03.65.-w 

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.NEST CNR-INFM & Scuola Normale SuperiorePisaItaly
  2. 2.Steklov Mathematical InstituteMoscowRussia

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